WB5 2 in 1 Bluetooth 5.0 Transmitter Receiver TV PC Car Speaker 3.5mm AUX Audio Adapter Bluetooth Transmitter: add Bluetooth wireless function to your TV,PC,MP3 player,DVD player to enjoy wireless music and sounds Bluetooth Receiver: turn any speakers,headphones,stereo system to Bluetooth enabled Every time when the device power on,the transmitter will automatically connect to the last connected device Bluetooth-enable all 3.5mm media devices (enable Bluetooth receiving: speakers,headphones and more; enable Bluetooth transmission for MP3,CD/DVD players,e-readers,TVs and more) Easy to setup,plug and play Compatible with Android,iOS system mobile phone and Pad,and Bluetooth speakers or earphones supporting A2DP protocol to connect and use Specification: Bluetooth version: 5.0 Support protocol: RX: A2DP,AVRCP,HFP; TX: A2DP Working frequency band: 2.402GHz -2.480GHz Power level: Class II Audio coding: SBC Working current: RX22MA TX35mA Built-in battery: 250mAh Charging current: about 200mA Charging time: about 2 hours Life time: RX>12H,TX7H Bluetooth distance: >10m (open place) Charging method: Micro USB 5V/0.5A Input/output connection mode: AUX interface Package included: 1 x 2 in 1 Bluetooth 5.0 Transmitter Receiver 1 x English and Chinese User Manual Other items not included