Feature1.Latest Bluetooth 5.0 technology, stable connection for up to 10m/33ft wireless connection range2.Bluetooth 5.0 receiver transmitter adapter. Receiver Mode: Blue LED Light. Transmitter Mode: Red LED Light3.Supports Bluetooth speakers, headphones, headsets, keyboards, mice and more4.Extremely compact and lightweight USB adapter, pocket size 3.2x1.7x0.85cm5.Broad Compatibility: With the included 3.5mm cable, this receiver transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc.SpecificationsProduct Name:Bluetooth 5.0 Audio Transmitter Receiver AdapterColor:BlackShell Material:Metal, PlasticBluetooth:V5.0Wireless Range:10m/33ftTechnology:BT5.0, A2DP, AVRCP(Receiver Mode)Receiver Mode:Blue LED LightTransmitter Mode:Red LED LightSize:3.2x1.7x8.5cmWeight:20gNoteDue to the screen difference, the color may be a little different from what you expectPackage Included1 x Bluetooth 5.0 Audio TransmitterReceiver Adapter1 x 3.5mm AUX Cable(1m/39inch)1 x User Manual