Switch between transmitter and receiver modes with the simple flick of a switch Connect the product to a device such as a TV with a 3.5 audio cable/ audio cable. Wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones Technologies: BT5.0, A2DP, AVRCP (receiver mode only) Operation Range: Up to 10m / 33ft (without any blocking objects) Charging Time: 2 hours Continuous Use Time: 6 hours (Receiver Mode) / 5 hours (Transmitter Mode) Dimensions: 44 x 44 x 12mm (The product appearance and printed words depending on the batch, but this does not affect use) Color: As shown Material: ABS Package Contents: 1 x Audio Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.