ThermTec Cyclone 625

• 640×512 thermal sensor: The high-resolution 12 μm sensor gives the ThermTec Cyclone 625 a clearer, more detailed thermal image, helping distinguish animals, people, and background structure more easily at short to mid distances.
• NETD 20.00 mK sensitivity: High thermal sensitivity improves separation between subtle temperature differences, which matters in rain, humidity, changing ground temperatures, and other difficult observation conditions.
• Compact 25 mm F1.0 handheld design: With a 25.00 mm objective and a weight of just 261.00 g, this thermal monocular stays easy to carry for long walks, quick scans, and frequent one-handed use.
• Wide 17.50 ° field of view: The broad viewing angle covers more ground in a single sweep, making the Cyclone 625 well suited to woodland edges, field scanning, search tasks, and general outdoor observation.
• Replaceable 18650 power system: The use of a replaceable battery and up to 8.00 h of operation is practical for longer outings, since power can be restored quickly without waiting for the device itself to recharge.

About the ThermTec Cyclone Series

The ThermTec Cyclone series was introduced on November 19, 2024 as a compact thermal imaging monocular family aimed at users who want a lighter, simpler handheld device without giving up modern core performance. Within ThermTec’s monocular range, the series sits as a practical option for new hunters and general outdoor users who need a pocketable thermal for regular field observation.

Cyclone models are built around a compact handheld format, replaceable rechargeable lithium-ion batteries, and an image system designed to adapt to different scenes. The series uses Forest, Target, and Outline image modes together with six color palettes, allowing the user to tune the display for vegetation, open terrain, or prolonged observation. ThermTec also positions the series for rescue, night hunting, hiking, and exploration, which explains its emphasis on low weight, fast handling, and straightforward controls. Across the range, the Cyclone line combines thermal detectors with NETD below 20 mK and AI-assisted multi-target distance measurement, giving the series a clear focus on accessible thermal performance in a compact body.

About the ThermTec Cyclone 625

The ThermTec Cyclone 625 is the highest-resolution model in the Cyclone family, combining a 640x512 thermal sensor with a 25.00 mm F 1.0 objective lens for close to mid-range handheld observation. Its native 1.40 x magnification and wide 17.50 ° field of view make it especially effective when scanning larger areas quickly, whether the task is locating movement along a tree line, checking open ground, or monitoring activity during a night walk or hunt. The stated 1300.00 m detection range gives it enough reach for early spotting, while the wide image keeps tracking comfortable at shorter distances.

The image chain is built for practical field use rather than headline numbers alone. A 12.00 μm pixel pitch, 20.00 mK NETD, and 50.00 Hz refresh rate help the monocular present a stable, responsive image with better separation between weak heat signatures and their surroundings. That matters when targets are partly screened by vegetation or when ambient temperatures reduce thermal contrast. The 1024×768 AMOLED display supports clear viewing with good perceived contrast, while the -5/+5 dpt diopter range helps adapt the eyepiece to different users.

In daily use, the Cyclone 625 stays easy to carry at 261.00 g and 136.00 mm in length. The central focusing system supports quick adjustment in the field, and the replaceable 18650 battery with 8.00 h runtime is well suited to longer sessions. Built-in WiFi, image capture, and video recording add useful documentation and app connectivity without making the unit bulky.

About ThermTec

ThermTec Technology Co., Ltd. was established in 2011 and is based in Hangzhou, Zhejiang, China. The company develops and manufactures infrared thermal-imaging systems and solutions, with expertise spanning optics design, detector production, and AI-driven calibration. That combination is particularly relevant in thermal products, where image quality depends not only on the sensor itself but also on lens design, calibration stability, and image processing.

ThermTec’s outdoor range includes thermal monoculars, imaging sights, clip-on devices, and multispectrum binoculars. The company also highlights its proprietary NST algorithms and patented image-processing technologies, reflecting a strong focus on extracting a cleaner and more usable image from compact field devices. In the thermal monocular category, ThermTec has built its reputation around practical handheld products that balance portability, detection capability, and modern digital features for hunting and observation use.

Main Features

• Magnification: 1.40 x
• Objective lens diameter: 25.00 mm
• Lens aperture: F 1.0
• Field of view: 308.00 m/1000m
• Field of view (deg.): 17.50 °
• Eye relief: 20.00 mm
• Diopter range: -5/+5 dpt
• Detection range: 1300.00 m
• Thermal sensor resolution: 640x512
• Pixel pitch: 12.00 μm
• NETD: 20.00 mK
• Refresh rate: 50.00 Hz
• Calibration mode: Automatic, Manual
• Display type: AMOLED
• Display resolution: 1024×768
• Image capture: Yes
• Video recording: Yes
• Connectivity: Wifi
• Battery type: 18650
• Battery life: 8.00 h
• Length: 136.00 mm
• Width: 76.00 mm
• Height: 54.00 mm
• Weight: 261.00 g
• Working temperature range: -20°C to +50°C
• Waterproof: Yes
• Fogproof: Yes

Warranty

ThermTec provides a 3-year warranty for the ThermTec Cyclone 625. This stated warranty period supports the product’s role as a field-ready thermal monocular intended for regular outdoor use.

In the Box

• ThermTec Cyclone 625 thermal monocular
• Battery
• Charger
• USB cable
• Lens cloth