Description
Bluetooth MP3 Player Module with USB, microSD and Amplifier
Audio player module with Bluetooth 2.1 and playback from USB storage or microSD card. It includes an audio amplifier, 3.5mm jack and control buttons. The listing says headphones or 4Ω, 3W speakers can be connected; output is stated as up to 3W at 5V.
Specifications stated in the listing
- Power interface: mini-USB (the description also refers to micro-USB)
- Supply: 5V DC; the listing also mentions a 3.7V battery
- Bluetooth audio input: version 2.1
- Audio jack: 3.5mm
- Speaker impedance: 4–8Ω
- Playback formats: MP3, WMA, WAV, FLAC
- Controls: volume up/down, next/previous, pause/play, repeat on/off, USB/SD mode
- Dimensions: 50 × 40mm
The listing says the USB port can charge a battery and transfer data, but does not specify battery-management details; verify the board revision before connecting a cell. Use a suitable 5V supply and speakers within the module’s limits. Do not short the audio output or connect a speaker below the supported impedance.
