Support all audio equipment with audio input interface, realize wireless audio receiver transmission Support automatic search for Bluetooth devices to realize connect, transmit wireless audio transmission Built-AEC echo cancellation and noise cancellation circuit ANC, gorgeous stereo sound more pure Built-in enhanced signal transmission circuit, connected faster and more stable Double lossless audio formats compatible Support AUX OUT, Earphone Automatic memory connected function, the operation is easier, more convenient Built-in battery, Long standby Consume low power Live voice prompts, simple and clear operating Smart compatible Android, IOS phone system and PAD, and all Bluetooth audio devices Support connect a mobile phone Whether plug and play: plug and play External power supply: no external power supply Transmission rate: 4 (Mbps) Operating frequency: 2480 (MHz) Support agreement: A2DP, AVRCP, HFP, SPP HID Received operating current: 43mA Launch current: 60mA Standby current: 8H Bluetooth distance:> 10M Charging mode: Micro USB 5V / 0.5A Output connection: 3.5MM stereo interface Input connection: 3.5MM stereo interface Size:12.5*7*3.8cm Weight:120g Color:black+white Compatible: Andrews, IOS system phones and PAD, and all Bluetooth audio devices, audio equipment with audio input interface Specifications: Supports AUX IN Product Plug and Play Product connection is simple Transmission distance up to 10 meters Supports stereo in launch mode Wireless Bluetooth Dongle Adapter Package Included: 1 x 2 in 1 Bluetooth audio Adapter 1 x 3.5MM audio cable