This diving watch DVR is waterproof to a depth of 30m & has infrared LEDs that mean it can record in total darkness. It has motion detection which will automatically start recording when the camera detects motion or simply use its start / stop continuous record function. This model has five times the resolution & twice the frame rate of most watch DVRs on the market. It can record up to 4 hours of full colour 1080P (1920 x 1080) video at 30fps with audio onto its 8GB of internal flash memory. Video compression: AVI video format, 1080P 1920 x 1080 Voice recording: Yes Flash Memory: 8GB Frame rate: 30 frames / second Minimum Illumination: 0 lux (Infrared LEDs) Motion detection Recording mode :continuous recording until memory is full or manually off 12MP stills camera Time / Date stamp Adaptor type: USB (Universal Serial Bus) adaptor charging cable Battery type: Lithium-ion Battery use time: about 5hours Colour video with voice lets you clearly see who's there & hear what they say Playback video on PC 1 Year guarantee It Serves as mini-camcorder, stills camera & voice recorder as well as a real working watch. Simply plug the watch into a PC using the USB (Universal Serial Bus) cable provided to access the recordings.