ThermTec Cyclops 335 Pro

The Cyclops 335 Pro is a 384×288, 12 µm thermal monocular quoted at 25 mK, with a 35 mm F1.0 lens giving a 3.3x base magnification, a 7.5° field of view and continuous digital zoom to 6x (19.8x in total) at 50 Hz. Retailers print two range figures — 750–860 m "detection" and 1,750 m maximum — and the larger is stored here; identification is quoted at about 375 m.

It uses a 0.39-inch 1024×768 OLED display, records photo and video to 16 GB, and streams two-way over Wi-Fi to ThermTec's app. Two built-in 18650 cells give up to 12 hours, charged over USB-C. The body is IP67, survives a 1 m drop, operates from -20 to 55 °C and weighs 550 g at 190 mm.

It suits fields and open ground where its high base magnification helps, and long nights where the 12-hour battery counts. The narrow view is a handicap in woodland; the Cyclops 325 Pro is the wider alternative. Several retailers list it as discontinued.