File Format: JPEG; Video File Format: H.264; Auto saving every 30 minutes or 2GB and immediately re-open another file; Internal Storage: 512MB DDR (HD) 1GB DDR(FHD); Operation Environmental Temperature: Approx. -20~55'C; Speaker: Yes; Shutter: Electronic shutter; LED: Green/Red to confirm status, battery status; Storage Media: TF card 4~64GB; Digital Output: USB 2.0 interface to PC; Power Control: Auto Power off / Manual off; Power Source: Polymer rechargeable battery 2000mAh; System: Windows 2000, ME, XP, Vista; Battery life: 8 hours.