Battery Capacity: 260mAh Lithium Battery: 25 hours of continuous use Working Temperature: -10-40 TF Card Expansion: Expandable to 512GB Storage Space: 16GB Name:Professional HD Recorder Recording Format:WAV, MP3 Write Rate:32/128/512/1024/1536 kbps Music Format:WAV, MP3 Recording Time:512kbps Battery Recording Time:About 25 hours of continuous recording in noise reduction mode at 512kbps bit rate Sampling Rate:16KHZ 48KHZ Frequency:20KHz-20KHz Microphone:Omnidirectional Microphone Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Black Material:ABS Package Contents: 1 x Professional HD Recorder 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.