Specifications:In transmission mode, the adapter can wirelessly transmit audio from a non-Bluetooth TV, home stereo system or CD player to a bluetooth-compatible headset or speaker.In receiving mode, it can wirelessly transmit audio from a Bluetooth-enabled mobile phone, tablet or computer to a wired stereo, speaker or headset.It can easily switch between transmitter and receiver modes with the button control.With high performance of wireless audio streaming function, it can be widely used in your computer, laptop, home stereo system, headset, smart phone, MP3 player , CD player, etc.It has a mini compact size, which can be easily carried.Item Name: Wireless AdapterMaterial: PlasticTechnology: bluetooth-compatible 5.0, A2DP, AVRCP (Receiver Mode Only)Battery Capacity: 200mAh (Included)Transmission Distance: 10mCharging Time: 2 HoursFeatures: Wireless, Rechargeable, High PerformanceSize: 4.4cm x 4.4cm x 1.2cm/1.73" x 1.73" x 0.47" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Wireless Adapter1 x Micro-USB Power Cable1 x RCA Cable1 x 3.5mm Auxiliary Cable