💎Product Overview.
⭐ Support MP3 format, power on auto play, red LED indicator updates when playing status.
🌙 Support U disk (tested 32G), TF card (tested 16G) playback mode; power on default TF card mode, if the TF card does not exist automatically jump to U disk mode, and both devices are installed, you can manually set the playback mode, please see the key operation instructions for details.
▲ Key to adjust up/down track switching, volume +-, pause/play, mode switching, please refer to the key operation instructions for details.
★ You can set "single song/full song" loop by pressing the key, default full song loop on power up, press "Repeat" key to change the loop mode
⚡ Key operation explanation
"Prev/V--" key: "short press" to switch "previous" song, "long press" to "Volume down"
"Next/v++" key: "short press" to switch to "next" song, "long press" to "Volume up"
"P/P/Mode" key: "short press" for "play/pause" switch, "long press" for U disk TF card "mode" selection
"Repeat" key: "short press" for "single song / full song" cycle switch (no long press function)
⚡Note.
"Long press" time is about 2S
If you use U disk mode, 5V power supply is recommended, some U disks do not support 3.7V power supply.

💎 Module Highlights.
⚡ Superb sound quality, onboard 2W mono amplifier (5V powered up to 3W) directly connected to the speaker (recommended with 4Ω 3W speakers)
⚡ With MicroUSB power supply interface, use mobile power or USB charger power supply through cell phone data cable.
⚡ Support TF card (cell phone internal storage card), U disk playback mode.
⚡ With speaker terminals without soldering, easy wiring.
⚡ Module design for easy modification.

💎Product Specifications
⚡ Power supply range: 3.7~5.5V
⚡Product size: 45mm*36mm

💎Product List.
⚡2*Mp3 Lossless Decoders Decoding Power Amplifier
⚡1*30cm USB Data Cable