Features: 1. Built-in time chip, with automatic time synchronization function, can be used as the basis for time, easy to browse to find documents 2. Built-in high-energy lithium polymer batteries to meet your recording needs 3. Power failure auto-save, when the system detects insufficient power, the recorder will automatically save the file in advance and then automatically shut down to ensure that the recording data is not lost 4. Mini and compact, easy to carry around 5. OTG connection to the phone, convenient transmission 6. Strong magnetic adsorption, not easy to lose Parameters: 1. Shell material: CNC aluminum alloy 2. Battery capacity: 120mAh 3. Recording mode: boot recording, shutdown save 4. Recording format: WAV 5. Playback format: MP3/WMA/WAV 6. Sampling rate: 48kHz 7. Recording bit rate: 192kbps 8. Charging time: about 1 hour; recording time: about 18 hours; playback time: about 12 hours 9. Memory time: 4GB: up to 48 hours 8GB: up to 96 hours 16GB: up to 192 hours 32GB: up to 384 hours 10. Size: 29 x 29 x 7.6mm 11. Weight: about 9.7g