This recorder is designed to start recording as soon as the sound is detected, providing efficient and convenient recording. One click recording to prevent accidental touch Independent voice controlled recording switch Compact in Size: Small in design, this digital audio recording device can be carried anywhere without drawing attention. Mobile OTG online playback<br><br>Memory expansion: TF card supports 128GB expansion Recording format: WAV Sampling rate: 16KHZ Number of bits: 32kbps-1536kbps Recording time: approximately 96 hours (recording compression ratio of 192kbps) Recording method: One click recording Microphone: Built in imported large-diameter microphone Music formats: WAV, WMA, MP3 USB connection: Mini USB Battery capacity: 2500mAh Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:Black Material:ABS<br><br>Package Contents: 1 * Recording machine(Built in memory card) 1 * Charging cable 1 * Earphones<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.