SD Card Reader with MP3 Amp Module

• Power supply range: 3.7 – 5.5V
• Onboard 2W mono amplifier (5V power supply up to 3W) can directly connected speakers (recommended with 4?3W speakers), 3.5mm gold-plated headphone jack can be accessed by headphones or external audio.
• With Micro USB power supply interface, using mobile bank power or USB charger power supply, can also be used 3.7V lithium battery, USB 5V power supply.
• Support TF card (mobile phone memory card), U disk playback mode.
• With a speaker terminal without soldering, easy wiring.
• Support MP3 format, power automatically play, led status turn to red.
• Support U disk (tested with 32G), TF card (tested with 16G) playing mode, power 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 refer to the key operation instructions.

Button Definition

• “Prev / V–” key: “short press” to switch “Previous” song, “long press” to switch “volume down”
• “Next / v ++” key: “short press” to switch “next song”, “long press” to switch “volume increase”
• “P / P / Mode” key: “short press” to “play / pause” switch, “long press” for the U disk, TF card “mode” select
• “Repeat” key: “short press” for the “single / full song” cycle switch (no long press function)