Bullet Points: 1It is a voice recorder, a video recorder, an electronic watch, and a sports bracelet. 21080P pixels, one-click recording, one-click recording, motion stabilization. 3Built-in intelligent noise reduction chip, intelligent noise reduction HD recording. 430 days long standby, large capacity environmentally friendly battery. 5Power off smart save to prevent your data from being lost. 1.It is a voice recorder, a video recorder, an electronic watch, and a sports bracelet. 2.1080P pixels, one-click recording, one-click recording, motion stabilization. 3.Built-in intelligent noise reduction chip, intelligent noise reduction HD recording. 4.30 days long standby, large capacity environmentally friendly battery. 5.Power off smart save to prevent your data from being lost. 6.OTG connection phone. 7.Sports waterproof and sweat proof. Parameters: Recording time: 240 (minutes) Memory card type: no expansion card is supported Display: OLED screen Transmission interface: USB 2.0 Video: Support video capture Battery: lithium battery Product size: approx. dial 46X20X12mm/1.81*0.79*0.47in, strap 256X12 (mm)/10.08*0.47in Product weight: about 23 (g) Color: Black Capacity: 4GB, 8GB, 16GB, Frequency playback format: WAV List: watch *1 data cable * 1 manual * 1