Specifications: Main functions: recording video and audio at the same time, taking photo, USB drive, and glasses Small in shape, wide use range and more secret Video format: AVI, 720*480 Memory: support max 32GB TF card(not included) USB: 2.0 Charging time: 2-3hours Battery use time: Polymer Li battery. can work 1 hours continually Operation systems: No need for driver installation if the operating system is Windows ME/ 2000/ XP/ Vista or above (windows98 is excepted) Package Included: 1* Eyeglasses camera 1* USB cable 1*Glasses cloth 1*Small bag 1* User manual Attention: The camera will power off automatically within 5s without any operation. The system will save the video file firstly then turn off if it is low power when taking video. Constantly video recording, each operation will create a new file. Keep a proper distance and DV Vertical with good ample lighting while recording to ensure a good shooting image. The time of PC recognizing the device is different according to its different system and configuration, so please not operate during recognizing. If the device can’t be recognized, please check your computer’s operation system, device drivers, USB port and the USB cable is normal, and then connect the hardware again. The device built-in high capacity polymer lithium-ion battery, no remember function, can be rechargeable. In the first 5 usages, please charge it fully when it is power off. Then can activate the max capacity and get the standard time.