G1 Helmet Night Vision Goggles Binocular 1920x1080P 940nm IR Head Mount Eyepiece. Digital Zoom:4.5x. Angle Of View:30°. Exit Pupil Distance:40mm. F# for Objective lens:1.2. Video Output:240×536 resolution AMOLED. Imager CMOS:High-sensitivity Sensor. Imaager Size:1/2.9′. IR LED:3W Infared LED with 940nm. Micro SD Card:Support SDHC 4GB32GB SD Card. Hardware Buttons:Power on/off or ZOOM. Record:MOV file in SD storage. External power supply:TypeC 5V/2A. 2PCS 16340 rechargeable battery. Battery life: 6 hours working time with IR off. 3modes:Video, Playback, Menu. 5 levels IR switch for USB power, 3 levels IR switch for battery. Auto Power Off (Off/3min/ 5min/10min). Language: English /French/ Spanish/Portuguese/Deutsch/9 LANGUAGES. OLED Brightness 4 Levels. Mount Head Strap 1. Thanks for your kindly understand. We are committed to resolve all issues in a friendly and satisfactory manner. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. Your recognition will make us more confident to develop business and serve you better. We understand the concerns and frustrations you might have, and will do our endeavor to resolve the issues. Please give us the opportunity to resolve any problem. Here is illustration shows how to leave me the feedback, please follow the step, thank you very much! And hope to see you soon.