1: OTG directly connected to the mobile phone to download, connect to the OTG adapter, you can play and manage the recording files on the mobile phone 2: Automatically save when power off. When the system detects that the power is insufficient, the recorder will automatically save the file in advance and then automatically shut down to ensure that the recorded data is not lost. 3: 18h uninterrupted recording, 30 days long standby, built-in high-energy polymer lithium battery and a new generation of power The intelligent energy-saving system is small in size, but it can meet your recording needs 4: Large-capacity U-disk function, large-capacity U-disk storage function, built-in 8G large memory, no need to worry about recording storage space 5: Built-in time chip, intelligent time stamp, built-in time chip, with automatic time synchronization function, can be used as a time basis, easy to browse and find files<br><br>Recording method: record when power on, save when power off Battery: Environmentally friendly polymer lithium battery Charging time: about 1 hour Recording time: about 18 hours Playing time: about 12 hours Recording format: WAV Playback format: MP3/WMA/WAV 8GB can save 96 hours Sampling rate: 48KHZ Recording bit rate: 192KBPS Product size: 29x29x7.6mm Weight about: 9.7g Colour:Black Material:Aluminum Alloy<br><br>Package Contents: 1 * Recorder 1 * Data cable 1 * Headset<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.