Night vision goggles

" -Functions: day and night vision, taking photos,recording and replaying, etc. - Playback on device, monitor or PC - Infrared imaging, with higher definition at low light - With USB 2.0 port, video output and power port, morepractical - Work time: about one hour while opening the auxiliarylight, 2.5 hours while not opening it AH40 - Buit-in adjustable infrared illuminator - The view distance ( low light ): approx. 200m / 7874inches - The view distance ( full dark ): infinity - It is equipped with external power - High capacity chargeable lithium-ion battery, 750mAh,3.7V ( please ensure the battery would be charged for 10hours in the first time to make it work best )"