Features: 1.360 Degree Stereoscopic Recording: Using a highly sensitive capacitive microphone, 360 degree surround all round sound pickup, making the sound clearer. 2.DSP Noise Reduction: Using acoustic DSP noise reduction module, with highly sensitive microphone, left and right channel noise reduction technology, filter noise from the source and restore clear sound. 3.Intelligent Voice Activated Recording: Automatically record when there is sound to save storage space as much as possible, and also save time to play back and filter useless clips. 4.Native Files Removal Function: Plug in the matching in line headphones to the digital voice recorder and then delete files locally. And you can connect the OTG adapter to view and manage files on the mobile phone. 5.One Click Recording: Simple operation, just one click to start recording. Suitable for business meeting records, student study recording notes, reception interview recordings, etc. specification:Item Type: Voice Recorder Watch Material: ABS, LCD Gross Weight: 135g / 4.8oz Recording Format: WAV Standby Time: 30 days Charging Time: about 2h Built in Polymer Lithium Battery: 300mAh PackageList:1 xVoice Recorder Watch 1 x Manual 1 x Charging Cable 1 x Headset NoteThe product suddenly cannot record, the screen does not respond or is always on some problems, you can connect the computer format the device, restore the factory Settings have solved these problems.