As far as the night viewing distance: >200m. Built in power: AA battery(Not included). Battery endurance: 1.5/2.5h (1R ON/1R OFF). Infared illumination Brightness regulation 3. Full metal material, anti-vibration, durable yet lightweight.
Up and Down Design, angle adjustable. Easy to install, one handed operation. Suitable for nighttime games and hiking. Compatible with PSV-7 or PSV-14. With night vision device slide rail, aluminum alloy material, high matching degree.
Fixed screw, CNC machined, durable. It can be rotated up and down when installed on the helmet, which is convenient to use. The sliding rod pushes smoothly, and the lacquer design is full of texture. Suitable for all kinds of rail helmet night vision devices that can be installed successfully.
2.8cm / 1.1inch.