Features 1、Good noise reduction and bass mode. 2、This portable, lightweight wireless audio transmitter and receiver is the ideal wireless audio solution for all situations and applications. 3、Ultra‑portable audio stream power supply.Weighing just 19 grams, it has powerful wireless audio streaming capabilities.Place the transmitter and receiver in a backpack or laptop bag and carry it effortlessly. 4、Extensive compatibility.With a 3.5 mm cable and a 3.5 mm to 2RCA cable, this transceiver adapter is widely used in computers, laptops, home stereo systems, headphones, smartphones, MP3 players, CD players, and more. 5、Small size, easy to carry, powerful transmission function, stereo channel, excellent sound quality. Specification Condition: 100% Brand New Item Type: Bluetooth Receiver Adapter Material: ABS Optional Colour: White, Black Weight: Approx. 40g/1.4oz Sound Channel System: Stereo Transmission Frequency: 2.4-2.48GHZ Transmission Range: 10m/32.8ft Battery Type: Polymer Lithium Battery Battery Capacity: 130 MA Polymer Duration of Service: ≤4h Bluetooth Version: 5.0 Charging Time: ≥ 2h Charging Voltage: 5V Package List 1x Bluetooth Audio Adapter 1x Instruction 1x Audio Connectors 1x USB Line