This ultra-compact Bluetooth 5.0 audio receiver decoder board is designed for your DIY embedded audio projects. Featuring Type-C power supply and lossless audio decoding, it's the ideal choice for upgrading car stereos or home speaker systems. Key Features: Ready-to-Use, Ultra-Small Size: At just 3cm x 3cm, its lightweight design is perfect for any space-constrained project. Bluetooth 5.0 Lossless Decoding: Equipped with a high-quality chip for stable audio transmission, providing a Hi-Fi-grade lossless sound experience. Versatile Interface: Features a universal Type-C 5V power supply and a 3.5mm dual-channel headphone jack for simple wiring. Wide Compatibility: Supports A2DP/AVCTP/AVDTP/HFP and other configurations, making it compatible with most Bluetooth devices on the market. Technical Specifications: Product Name: MP3 Bluetooth Decoder Board Power Supply: DC 3.7V ~ 5V USB Power Supply: Universal TPYE-C 5V Signal-to-Noise Ratio: 90dB THD+N: -70dB Crosstalk: -86dB DNR: 91dB Service Level: > 5 meters