See Beyond Darkness

Professional-grade thermal imaging optics built for hunters, explorers, and those who protect what matters. Detect targets up to 1,500 yards in complete darkness.

Explore Our Optics
5-Year Warranty
IP67 Rated
50Hz Refresh

Thermal Imaging Lineup

From pocket-sized monoculars to high-resolution binoculars, i4SEE covers every field scenario with infrared precision.

i4SEE EM10-256 Thermal Monocular with 256x192 infrared detector and AMOLED touchscreen

EM10-256 Thermal Monocular

The EM10-256 packs a 256x192 uncooled VOx infrared detector behind a 10mm F1.0 lens, reaching targets at 500 meters. At just 205 grams, this pocket-sized thermal fits in one hand. A 1.43-inch AMOLED touchscreen shows five color palettes without pressing your eye to an eyepiece. Six hours of battery life with 20W quick charging keeps you scanning through the night. WiFi and Bluetooth let you stream footage to the i4SEE app in real time.
In Stock Check Price
i4SEE M25-384 Thermal Monocular with 384x288 sensor and 10-hour battery life

M25-384 Thermal Monocular

The M25-384 carries a 384x288 thermal sensor with 12-micron infrared detection, recognizing targets at 400 yards and detecting heat signatures out to 1,000 yards. Boots in two seconds flat. Five display modes help you pick out game in dense brush or open fields. Two replaceable batteries deliver over ten hours of continuous scanning. IP66 waterproofing handles downpours, dust, and temperature swings from -86 to 140 degrees Fahrenheit.
In Stock Check Price
i4SEE M35-384 LRF Thermal Monocular with laser rangefinder and 1500-yard detection

M35-384 LRF Thermal Monocular

The M35-384 pairs a 384x288 thermal sensor with a built-in laser rangefinder accurate to 650 yards, while thermal detection stretches to 1,500 yards. The 35mm focal lens and 50Hz refresh rate deliver stutter-free imaging on a 640x400 AMOLED display. Digital zoom from 1x to 4x (2.6x to 10.4x effective) lets you close the gap on distant targets. Replaceable dual batteries run ten-plus hours in the field. IP66 rated for all-weather use.
In Stock Check Price
i4SEE B50-640 LRF Thermal Binoculars with 640x480 sensor and OLED display

B50-640 LRF Thermal Binoculars

The B50-640 delivers the highest resolution in the i4SEE lineup: a 640x480 thermal sensor behind a 50mm focal length lens with sub-30mK NETD sensitivity. Binocular-style viewing through an OLED high-definition display reduces eye fatigue during extended glassing sessions. The integrated laser rangefinder hits targets with 600-meter accuracy. Built for serious hunters and security teams who need maximum detail at distance, rain or shine.
Limited Stock Check Price
i4SEE K25-384 LRF Thermal Monocular with Full-HD AMOLED display and 12-hour battery

K25-384 LRF Thermal Monocular

The K25-384 mounts a 25mm focal lens and 12-micron detector that sees out to 1,300 meters, paired with a laser rangefinder accurate to 1,000 meters. The flagship feature: a 1920x1080 Full-HD AMOLED display, nearly double the resolution of standard thermal screens. Dual rechargeable batteries push runtime to 12 hours. IP67 waterproofing and 32GB onboard storage for photo and video round out this all-day field companion.
In Stock Check Price
Pocket Thermal Thermal Monocular Thermal Binoculars Thermal Riflescope Fusion Monocular
View All Products

Why Hunters Choose i4SEE

Engineered in the USA with military-specification infrared sensors and field-tested durability.

50Hz Real-Time Imaging

Zero stutter, zero lag. Our 50Hz refresh rate delivers fluid thermal video that tracks fast-moving game without frame drop or ghosting.

IP67 All-Weather Build

Rain, snow, dust, mud. i4SEE optics carry IP66/IP67 ratings and operate from -86°F to 140°F, built for the worst conditions you can find.

5-Year Full Warranty

Every i4SEE device ships with a five-year warranty covering the entire unit, plus lifetime firmware updates and US-based technical support.

WiFi App Control

Stream thermal footage to your phone, share images in real time, and update firmware over the air through the i4SEE companion app.

AMOLED Displays

Vivid color palettes on high-resolution AMOLED screens, including Full-HD 1920x1080 on the K25. See heat detail other thermals miss.

All-Night Battery

Replaceable dual-battery systems push runtime to 10 or 12 hours. The EM10-256 adds 20W quick charging for rapid field top-ups.

How It Works

From box to field in minutes.

1

Unbox & Power On

Charge the battery, press one button. Boot time under two seconds.

2

Choose Your Mode

Select from five thermal palettes: White Hot, Black Hot, Red Hot, Iron Red, or Blue Heat.

3

Connect & Share

Pair with the i4SEE app over WiFi to stream, record, and share thermal footage live.

4

Detect & Range

Spot heat signatures up to 1,500 yards. LRF models measure exact distance to your target.

i4SEE thermal optics team and facility

About i4SEE

i4SEE started with a straightforward goal: make professional thermal imaging accessible to every hunter and outdoor enthusiast in America. Our founding team spent years developing infrared optical systems for defense contractors before turning that expertise toward the consumer market.

Every i4SEE device uses world-class uncooled VOx infrared sensors, AMOLED displays, and ruggedized housings tested against MIL-STD conditions. We back each unit with a five-year warranty and US-based support because we stand behind what we build.

5
Product Lines
10,000+
Units Sold
5-Year
Warranty
USA
Based Support
Learn More

What Our Customers Say

Real feedback from verified buyers who use i4SEE thermal optics in the field.

★★★★★

Great Thermal Mono for the Price

This EM10-256 is a great thermal mono. The color palette and different modes work well. I tested it for a few days and it detects small animals at impressive distances. The touchscreen adds a level of convenience I did not expect at this price range. Solid build quality and the pocket-sized form factor makes it easy to carry on every outing.

EM10-256 Thermal MonocularVerified Purchase
★★★★★

Replaced My Expensive Thermal

I sold my much more expensive, higher-resolution thermal monocular and replaced it with the EM10-256. It performs well for my use case. The touchscreen interface makes switching between palettes fast, and at this weight you barely notice it on your belt. Battery holds up through an entire evening session without trouble.

EM10-256 Thermal MonocularVerified Purchase
★★★★★

Nothing Gets Past Thermal

Very well made. I bought the M25-384 for home security and nothing gets past thermal imaging. I am looking at buying more units to cover my entire property. The image quality at 384x288 resolution picks up details I missed with my old night vision setup. Two-second boot time means you are scanning before intruders know you are watching.

M25-384 Thermal MonocularVerified Purchase
★★★★★

Found Our Deer Without Tracking

The literal day we received the M25-384, we shot a deer and this thermal helped us locate it without any blood tracking at all. Clear vision in total darkness. The thermal and night vision modes together cover any situation on the ranch. My wife and son use it regularly now. A tool that paid for itself on the first hunt.

M25-384 Thermal MonocularVerified Purchase
★★★★★

Exceeded My Expectations in the Backcountry

As someone who spends a lot of time tracking game in the backcountry and scouting at night, the M35-384 LRF has exceeded my expectations. The built-in rangefinder gives me exact distances without carrying a separate device. Detection range to 1,500 yards means I spot game long before they sense me. The 50Hz refresh makes scanning feel natural and fluid.

M35-384 LRF Thermal MonocularVerified Purchase
★★★★★

Perfect Balance of Performance and Cost

The M35-384 hits the ideal balance between performance, size, features, and cost. The 35mm lens pulls in enough light for sharp thermal images, and the laser rangefinder accuracy holds up in practice. Battery swap system means I never worry about runtime on multi-day hunts. Hands down the best value in handheld thermal optics I have used.

M35-384 LRF Thermal MonocularVerified Purchase
★★★★★

Full-HD Display Changes Everything

The K25-384 Full-HD AMOLED display is a step above any thermal I have owned. At 1920x1080 you see heat detail that standard screens blur into mush. The 25mm lens and 12-micron detector pair well for mid-to-long range observation. Twelve hours of battery life means I leave camp at dusk and come back at dawn without swapping cells.

K25-384 LRF Thermal MonocularVerified Purchase
★★★★★

Great Quality at This Price Point

The K25-384 thermal works great. Giving it five stars because the price point and quality match up well against name-brand competitors. After using it for almost a year on frequent hunts, the battery life remains strong and image clarity stays consistent in cold weather. The laser rangefinder adds tactical precision that budget thermals lack.

K25-384 LRF Thermal MonocularVerified Purchase
★★★★★

Coon Hunting Game-Changer

Got the EM10-256 for coon hunting and it works exactly as it should. I have used it from early fall through winter, and if the animal is there, the thermal finds it fast. The compact size fits my jacket pocket, which means it comes along on every hunt instead of sitting in the truck. For what you pay, the performance punches above its weight.

EM10-256 Thermal MonocularVerified Purchase

i4SEE vs. The Competition

See how our thermal optics stack up against typical alternatives.

Feature i4SEE Budget Brands Premium Brands
50Hz Refresh Rate✓✕✓
AMOLED Display✓✕✓
Built-in Laser Rangefinder✓✕✓
WiFi App Connectivity✓✕✓
5-Year Warranty✓✕✕
IP67 Weather Rating✓✕✓
Lifetime Firmware Updates✓✕✓
Accessible Price Point✓✓✕

Built for Every Scenario

i4SEE thermal optics serve hunters, landowners, security teams, and outdoor professionals.

Night Hunting

Track and identify game in complete darkness. Thermal imaging reveals heat signatures through brush, fog, and rain that blind traditional optics.

Property Security

Monitor your perimeter after dark. Thermal detects trespassers, predators, and livestock movement at distances conventional cameras miss entirely.

Search & Rescue

Locate missing persons in wilderness, collapsed structures, or low-visibility conditions where visual and IR searchlights fail to penetrate.

Wildlife Observation

Study nocturnal animal behavior without artificial light that disturbs natural activity. Record and share thermal footage through the app for documentation.

Predator Control

Protect livestock from coyotes, wolves, and feral hogs. Detect predators approaching your herd from over a thousand yards, giving you time to respond.

Law Enforcement

Conduct nighttime surveillance, perimeter sweeps, and suspect tracking with reliable thermal detection that works in any lighting condition.

Jake Hollister, Wildlife Management Specialist
"I have tested dozens of thermal optics over fifteen years in wildlife management. i4SEE fills a gap that has frustrated professionals for a long time: field-grade thermal performance without the four-figure price tag. The sensor quality, display clarity, and build durability compete with units costing three times as much. For anyone working in the field at night, these belong in your kit."
Jake Hollister
Wildlife Management Specialist, 15+ Years Field Experience

Frequently Asked Questions

Answers to common questions about i4SEE thermal imaging optics.

Resolution depends on your typical engagement distance. The 256x192 sensor in the EM10-256 works well for close-to-mid range scanning under 500 yards. For longer distances or more detail, the 384x288 sensors in the M25, M35, and K25 models extend detection to 1,000-1,500 yards. The B50-640 with its 640x480 sensor delivers the sharpest image for identifying targets at extreme range.
LRF models (M35-384, B50-640, K25-384) include a built-in laser rangefinder. Press the rangefinder button to instantly measure the exact distance to your target. The M35 is accurate to 650 yards, the K25 to 1,000 meters, and the B50 to 600 meters. The distance reading appears on-screen alongside your thermal image.
All i4SEE thermals offer five color palettes: White Hot shows warm objects as bright white, Black Hot inverts this for snowy environments, Red Hot highlights warm targets in red, Iron Red uses an iron-spectrum gradient for detail, and Blue Heat provides a cool-tone overlay. Each mode helps identify targets in different terrain and weather conditions.
Yes. All i4SEE models connect via WiFi to the i4SEE companion app on iOS and Android. You can view the live thermal feed on your phone screen, capture photos and video, share footage, and perform OTA firmware updates. The EM10-256 also supports Bluetooth for additional connectivity options.
Battery life varies by model. The EM10-256 runs approximately 6 hours on its built-in battery with 20W quick charging. The M25-384 and M35-384 use dual replaceable batteries for 10+ hours of runtime. The K25-384 achieves up to 12 hours with its dual-battery system. Real-world battery life depends on display brightness, WiFi usage, and ambient temperature.
i4SEE thermal optics carry IP66 or IP67 weather protection ratings. IP67-rated models (EM10-256, K25-384) can survive full submersion in water up to one meter. IP66-rated models (M25-384, M35-384) resist heavy rain, dust, and direct water jets. All models operate in temperatures from -86°F to 140°F.
The i4SEE 5-year warranty covers the entire device including the thermal sensor, display, lens assembly, and electronics. Lifetime firmware updates and technical support from our US-based team are included at no extra cost. The warranty covers manufacturing defects and component failures under normal use conditions.
The EM10-256 is ideal for first-time thermal users. Its pocket-friendly size, touchscreen interface, and lighter weight make it approachable without sacrificing performance. For hunters who need longer detection range and a rangefinder, the M25-384 offers excellent value as a step up. The K25-384 suits experienced users who want Full-HD clarity and maximum battery life.
NETD (Noise Equivalent Temperature Difference) measures a thermal sensor's sensitivity. Lower NETD means the device detects smaller temperature differences between objects. The EM10-256 achieves 30mK, the K25-384 hits 25mK, and the B50-640 operates below 30mK. In practice, lower NETD reveals more detail in scenes where temperature contrast is subtle, such as detecting a bedded deer against warm ground.
Yes. The EM10-256 records audio-synced video to its 16GB internal storage. The K25-384 includes 32GB of onboard storage for both photo and video capture. All models can also stream video to your phone through the WiFi-connected app for recording on your mobile device.
i4SEE bridges the gap between budget thermals with limited features and premium brands that cost three to five times more. Our devices use the same sensor technology found in higher-end units: uncooled VOx detectors, 12-micron pixel pitch, and 50Hz refresh rates. The five-year warranty exceeds what most competitors offer at any price point. The key differentiator is AMOLED display technology across the entire lineup.
PIP (Picture-in-Picture) mode displays a magnified thermal view in a small window within your main field of view. This lets you zoom in on a specific target while maintaining awareness of the wider scene. PIP mode is available on the M25-384, M35-384, and K25-384 models. Activate it through the on-screen menu or quick-access button.

Latest from Our Blog

Guides, comparisons, and field tips from the i4SEE team.

Thermal monocular guide for night hunting
March 15, 2026

Thermal vs. Night Vision: Choosing the Right Optic for Your Hunt

Understanding the key differences between thermal imaging and traditional night vision helps you pick the right tool for specific game and terrain.

Read More →
Beginner thermal imaging setup guide
February 28, 2026

First-Time Thermal Buyer's Guide: 5 Features That Matter Most

NETD, refresh rate, resolution, battery life, and weather rating. Cut through the spec sheets and focus on what improves your field experience.

Read More →
Property security with thermal optics
January 20, 2026

How Ranchers Use Thermal Imaging to Protect Livestock at Night

Thermal optics detect predators and trespassers at distances where trail cameras and floodlights fall short. A practical setup guide for landowners.

Read More →

We use cookies to improve your experience. Privacy Policy