BT-22 Bluetooth 5.1 Audio Receiver Transmitter with Microphone 3.5mm AUX RCA Jack Wireless Stereo Adapter Car Headphone USB Dongle •Multifunction: This Bluetooth-compatible audio adapter supports transmission,reception and calls,making your life more convenient •Rechargeable: The Bluetooth compatible transmitter adopts Type-C rechargeable design,with large battery capacity,ensuring long-term work •Extensive compatibility: Bluetooth-compatible receivers are compatible with home stereo systems,car players,TVs,etc. •Bluetooth compatible: The wireless audio adapter is equipped with Bluetooth compatible V5.1 technology,with faster transmission speed and more stable connection with mobile phones •Low latency: The audio adapter is built with advanced chips to ensure high sound quality,providing a better music experience at home,in the car,office,travel,etc. •Specifications: •Product name: Bluetooth audio receiver 3 in 1 •Bluetooth version 5.1 •Bluetooth name: BT-22 •Connection range: 15M •Battery capacity: 200mAh •Working hours: receiving 8h,transmitting 5h •Frequency response range: 10Hz-20hkz •SNR: less than 110dB •Product functions: receive+transmit + call 3 in 1 •Product size: 80*20mm Package included: •1 x BT-22 Adapter •1 x 3.5mm Audio Cable •1 x 3.5mm to 2RCA Audio Cable •1 x USB Power Cable •1 x English and Chinese User Manual •Other items not include