Features 1.[Application] Bluetooth adapter connects to computer speakers, home stereo system or other speaker system via 3.5mm or RCA cable and then pairs with a Bluetooth sound device such as a smartphone or tablet to play music. 2.[Automatic Pairing] This Bluetooth music adapter is easy to set up and connect and pairs your device with the adapter once with the press of a button. It automatically reconnects with previously paired devices, which is convenient. 3.[Large Range And Rechargeable] The Bluetooth transmitter receiver has an indoor (unobstructed) connection range of up to 30 feet. And this adapter with built in battery, USB charging, can be used anywhere. 4.[Compatible Devices] Wireless music adapter works with most Bluetooth enabled devices, including smartphones, tablets, computers, laptops, and any active PC speakers, home stereo systems, and AV receivers. 5.[2 In 1 Function] Both Bluetooth receiver and Bluetooth transmitter, 2 in 1 design, can be adapted to a variety of modes. Capable of providing Bluetooth functionality to existing stereo, active speakers, PAs. specificationItem Type: BT Music Adapter Material: ABS BT Protocol Support: A2DP and AVRCP Transmission Distance: More Than 10m/32.8ft (Open Place) Battery Standard: 300MAH (Included), Type: Lithium Battery Working Time: More Than 5H Charging Time: About 1.5H Charging Input Voltage: DC 5V Input, Output Connection: 3.5mm Stereo Interface Compatibility: For Android System, for IOS System Cell Phones, Tablets and Other BT Devices, and Speaker Devices With Sound Input Interface PackageList1 x BT MusicAdapter 1 x 3.5mm Sound Cable 1 x Sound Connection Cable 1 x USB Charging Cable 1 x Instruction Manual