Item Type: Voice Recorder WatchMaterial: ABS, LCDGross Weight: 135g / 4.8ozRecording Format: WAVStandby Time: 30 daysCharging Time: about 2hBuilt in Polymer Lithium Battery: 300mAh .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1360 Degree Stereoscopic Recording: Using a highly sensitive capacitive microphone, 360 degree surround all round sound pickup, making the sound clearer. 2DSP 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. 3Intelligent 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. 4Native 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. 5One Click Recording: Simple operation, just one click to start recording. Suitable for business meeting records, student study recording notes, reception interview recordings, etc.