Specifications:The transmitter mode can wirelessly transmit audio from a non-Bluetooth TV, home stereo system or CD player to a bluetooth-compatible headset or speaker.The receiver mode can wirelessly transmit audio from a Bluetooth-enabled mobile phone, tablet or computer to a wired stereo, speaker or headset.It is convenient to use, just simply press the switch to switch between transmitter and receiver modes.Using advanced bluetooth-compatible 5.0 technology and 3.5mm audio cable(included) for easy connection.Equipped with a 3.5mm cable and RCA cable, this receiver transmitter adapter can be widely used in your computer, laptop, home stereo system, headset, smart phone, MP3 player, CD player, etc.Item Name: bluetooth-compatible 5.0 AdapterTechnology: BT5.0, A2DP, AVRCP(only Receiver Mode)Working Range: up to 10m/33ft(without Any Obstacles)Pairing Name: KN326Charging Time: 2 HoursBattery Type: 200mAh(Included)Material: ABSFeatures: Portable, Easy to Use, bluetooth-compatible 5.0, Wide Compatibility, Transmission Mode, Receiver ModeSize: 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 bluetooth-compatible 5.0 Adapter1 x Micro USB Power Cord1 x RCA Cable1 x 3.5mm Auxiliary Cable1 x User Manual