Description:Product name: Bluetooth-compatible adapterName: Bluetooth-compatible audio receiver transmitter 3 in 1Bluetooth-compatible version: 5.1Link range: 15MBattery capacity: 200mAhWorking time: receiving 8h/transmitting 5hFrequency response range: 10Hz-20HKzSignal-to-noise ratio: less than 110dBProduct function: receive + transmit + call 3 in 1Product size: 80x20MMPacking size: 11×7.5×2.3CMA set of weight: 85GPacking list:1 x Bluetooth-compatible adapter1 x 3.5mm audio cable1 x RCA line1 x type-C charging cable1 x user manualNote:1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding.2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.