Instructions for use 1. Bluetooth function: You can use your phone to search for Bluetooth "MOON" and connect to play music. 2. Recording function: When playing Bluetooth music on the phone, it can record the music being played on the phone without loss In the greeting card, you can record high fidelity MP3 audio and continuous recording. 3. MP3 function: It can play high-quality recordings or audio copied from a USB drive. 4. Recycling: The module is rechargeable and uses a 3.6V lithium battery. Type-c Reuse of data cable charging. 5. Autonomous DIY function: The program of the module can be upgraded using the USB flash drive function; You can automatically copy the voice from the USB flash drive to the flash drive. Ultra long standby: The static power consumption is within 0.1uA, and the built-in battery can stand by for 2 years. Recycling: Equipped with a built-in lithium battery, it can be charged using Type-C and reused. Autonomous DIY: Using type-C to USB interface, module programs can be replaced. Stored voice content: After connecting to Bluetooth, personalized music can be played on the phone. Colorful lighting: Connect the light strip to display different lighting effects. Intelligent playback: It can be triggered by external light sensing devices and human body sensing devices. Bluetooth recording: You can input your favorite music into the module's storage. Voice storage: Built in 32M Flash, you can copy USB voice to Flash or use recording