Guide TD650LS

• Built-In Laser Rangefinder (1200 m / 1300 yd): The integrated LRF module measures precise target distance without needing a separate rangefinding device, useful for accurately judging distance before a shot or during observation.
• 640×512 High-Sensitivity Detector (15 mK NETD): The 12 μm pixel pitch detector delivers a low Noise Equivalent Temperature Difference of 15 mK, producing sharp, low-noise thermal images with fine detail even in complete darkness.
• 50 mm, F1.0 Lens for Long-Range Detection: The largest objective lens in the TD Gen3 LRF lineup extends the detection range to 2600 m / 2800 yd, the longest of any model in the series, useful for glassing open fields, tree lines, or ridgelines at long distance.
• Ambidextrous, One-Handed Operation: The symmetrical housing and ergonomically placed controls allow comfortable use with either hand, while the mini focusing roller lets the user fine-tune focus with a single finger without breaking observation.
• 10-Hour Runtime on a Replaceable 18650 Battery: The battery can be swapped blindly in the dark, without needing to check polarity, keeping the monocular running through a full day of glassing or observation.

ABOUT THE TD GEN3 LRF SERIES

The TD Gen3 LRF Series is Guide's line of handheld thermal imaging monoculars with a built-in laser rangefinder, designed for hunters, outdoor enthusiasts, and field observers who need precise distance measurement alongside thermal detection. The rangefinder module is integrated directly into the housing without adding noticeable bulk, keeping the devices compact and easy to carry. The series spans several models, from entry-level detectors up to high-sensitivity 640×512 sensors, paired with 35 mm or 50 mm lens options to suit different detection-range requirements, and is aimed at applications such as night hunting, outdoor exploration, and search and rescue.

Every model in the series shares the same core design as the standard TD Gen3 line: a 12 μm uncooled VOx infrared detector, a 0.49" AMOLED display with 1440×1080 resolution, and a symmetrical, ambidextrous housing that supports genuine one-handed use. A mini focusing roller allows fast, precise focus adjustment with a single finger, while a replaceable 18650 battery provides roughly 10 hours of continuous runtime and can be installed in the dark without needing to identify the terminals.

Connectivity across the series is built around dual-band Wi-Fi (2.4 GHz/5 GHz), connecting the device to the TargetIR APP for image transfer, remote control, and OTA firmware upgrades, alongside Bluetooth support. Smart recording with audio, combined with up to 64 GB of internal storage, lets users document observations without carrying separate recording equipment. An IP67-rated housing and an operating range of -20°C to 50°C keep the series usable across a wide range of seasonal and climate conditions, while seven selectable color palettes (White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, and Sepia) give users flexibility in adapting the thermal image to different backgrounds and lighting conditions.

ABOUT THE MODEL (GUIDE TD650LS)

The Guide TD650LS is the top-of-line model in the TD Gen3 LRF lineup, pairing the series' 640×512 uncooled VOx infrared detector with a 50 mm, F1.0 objective lens — the largest lens offered in the series — and a built-in laser rangefinder rated to 1200 m / 1300 yd. This combination pushes the detection range to 2600 m / 2800 yd, the longest of any TD Gen3 LRF model, while allowing the user to confirm precise target distance directly through the device, without carrying a separate rangefinder or switching optics.

The 50 mm lens narrows the field of view to 8.8° × 6.6° (15×12 m at 100 m) and provides a 2.91x–23.28x magnification range, which suits long-range glassing of open terrain, agricultural fields, or distant ridgelines where identifying and ranging a target further away matters more than a wide scanning angle. Manual focus allows precise adjustment as the target distance changes.

Images are shown on a 0.49" AMOLED display with 1440×1080 resolution and a 20 mm eye relief, with seven selectable color palettes (White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, and Sepia). Photo and video capture with synchronized audio is supported, backed by 64 GB of internal storage, and dual-band Wi-Fi (2.4 GHz/5 GHz) connects the device to the TargetIR APP, while a built-in microphone and Bluetooth support additional connectivity.

Weighing 465 g and measuring 201×67×88 mm, the TD650LS is noticeably larger than the compact TD435LS and TD635LS, reflecting its larger objective lens. Power comes from a single, replaceable 18650 battery, providing up to 10 hours of operating time, while the IP67-rated housing and an operating range of -20°C to 50°C make the TD650LS a dependable choice for hunters and outdoor users who prioritize maximum detection range and built-in rangefinding over compact size.

ABOUT GUIDE

Guide (Guide Sensmart Tech Co.) is a Chinese manufacturer specializing in infrared and thermal imaging technology, operating as a subsidiary of Wuhan Guide Infrared Co. Founded in 2016, the company focuses on the design and production of commercial infrared sensors and thermal imaging devices. More information about the manufacturer is available on the Guide brand page.

Guide's product range spans thermal monoculars, thermal binoculars, digital night vision devices, riflescopes, and thermal clip-on attachments developed for hunting, outdoor observation, search and rescue, and security applications. The company applies its own infrared detector and imaging processing technology across its product lines, aiming to make thermal imaging accessible to a broad range of outdoor and professional users.

MAIN FEATURES

• Core Technology: ApexVision S1 system architecture (ApexCore S1 detector + Platform Nexus 1.0 + Algorithm Hyper-Light 2.0)
• Sensor Type: Uncooled VOx Infrared Detector, 8–14 μm
• Resolution: 640×512 px
• Pixel Pitch: 12 μm
• NETD: 15 mK
• Frame Rate: 50 Hz
• Objective Lens: 50 mm, F1.0
• Magnification: 2.91x–23.28x
• Field of View: 8.8° × 6.6°
• Field of View at 100 m: 15 × 12 m
• Detection Range: 2600 m / 2800 yd
• Focus: Manual
• Display: 0.49" AMOLED, 1440×1080 px
• Color Palettes: White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia
• Eye Relief: 20 mm
• Diopter Adjustment: -6 to +6
• Laser Rangefinder: 1200 m / 1300 yd
• Wi-Fi: 2.4 GHz / 5 GHz
• Interface: USB-C (Power supply/USB 2.0)
• Additional Connectivity: Microphone, Bluetooth
• Recording: Photo/Video with audio
• Internal Storage: 64 GB
• Battery: Single, replaceable 18650 battery, up to 10 hours
• Operating Temperature: -20°C to 50°C
• Waterproof Rating: IP67
• Weight: 465 g
• Dimensions: 201 × 67 × 88 mm

WARRANTY

The Guide TD650LS thermal imaging monocular is covered by a 2-year warranty.

IN THE BOX

• Guide TD650LS Thermal Imaging Monocular
• Hand Strap
• Neck Strap
• Carry Bag
• Lint-Free Cloth
• Battery Charger
• 18650 Battery ×2
• 5V 2A Adapter
• USB-A to USB-C Cable
• Quick Start Guide
• Warranty Card