Car Audio Receiver Board Bluetooth 41 BT50 Pro MP3 Lossless Decoder Board Wireless Stereo Music Module MICRO or TYPE-C Features: Equipped with Bluetooth connection password to prevent others from accidentally connecting. Ultra small size, easy to embed into modified products Dual channel stereo output, compatible with most market devices such as amplifiers, home audio, and car audio systems Standard MICRO MINI USB 5P interface, equivalent to Android phone charging port, can be powered by phone data cable Specific DIY embedded modification pins can be inserted and soldered onto one's own circuit board for modification High fidelity output circuit, resistance capacitance isolation, no noise, and excellent sound quality effect Wireless USB flash drive, memory card, and button settings, pure mobile operation connection for playing MP3 Equipped with 1 state foot, available for professionals to use Specification: Power supply voltage: DC 3.7-5V Power supply interface: MICRO USB port or 2.54mil pin port Bluetooth name: BM3 Bluetooth password for this batch of goods: 1688 (password needs to be entered to connect, cannot be modified) Communication distance: 3-12 meters (varies due to environmental barriers) Supports Bluetooth version: Supports Bluetooth 4.1 or below Support for mobile systems: Android, Apple systems Channel: Dual channel Audio quality: MP3 lossless decoding Built in amplifier: None External amplifier: No limitation on external amplifier size PCB thickness: 1.6mm Needle spacing: 2.54mil Color:Red,Black Size:3.3cm/1.29inch x 3.5cm/1.38inch x 1.1cm/0.43inch. Package Included: 1 x Digital Power Audio Amplifier Board NO Retail Box. Packed Safely in Bubble Bag. _x000D_