Three-in-one function: recording + OTG + U disk.
product manual:
OTG function
recording function
U disk function
Mobile phone playback
Computer play function
Time synchronization function
Side charging and recording function
One-button recording (boot recording/shutdown save).
Built-in microphone (capacitive) recording.
Professional WAV format recording.
Supports multiple formats of audio playback.
Recording low-power automatic save function.
Automatic shutdown/power saving function.