Features 1、Support USB interface or 3.7-5V power supply, with LED status indicator. 2、DIY embedded design, non-destructive decoding, easy to operate. 3、It is equipped with high quality Bluetooth decoder chip, which has stable performance and provides non-destructive sound quality. 4、Support Bluetooth 4.1, can operate pure mobile phone connection, play MP3. 5、Precise incisions and interfaces ensure the perfect applicability of the installation location and ease of installation. Specification Condition: 100% Brand New Item Type: Transistor Tester Material: Semiconductor Model: VHM-314 USB Power: Universal Micro USB 5V Power Power Supply: 3.7-5V SNR: 90db THD+N: -70db Crosstalk: - 86db DNR: 91db The Supporting Configuration: For A2DP/AVCTP/AVDTP/HFP Service Level: > 5m Package List 1 x Bluetooth Decoder Board