Description

Features & Benefits
Superior sound quality.
Onboard 2W mono amp (5V up to 3W) connects directly to speaker (recommended 4Ω3W), with 3.5mm gold-plated headphone jack for headphones or external audio.
MicroUSB port: use phone cable for power bank or charging MP3 battery; supports 3.7V lithium or 5V USB.
Supports TF Card (phone memory card) with display mode.
No-solder speaker terminals for easy wiring.
Designed for simple modification.

Product Overview
Supports MP3 format, auto-plays on power-up, red LED flashes while playing.
Supports U-disk (tested 32G) & TF card (tested 16G); defaults to TF, switches automatically if absent. If both present, user can set mode.
Buttons control track, volume, pause/play, and mode.
Menu button toggles single/all play (default all). Repeat button cycles playback mode.
Prev / V--: tap = previous, hold ≈2s = volume down
Next / V++: tap = next, hold ≈2s = volume up
P/P/Mode: tap = play/pause, hold ≈2s = U-disk/TF mode
Repeat: tap = single/all mode
Note: For U-disk mode, 5V power is recommended; some do not support 3.7V.