Features 1、This lightweight portable wireless audio transmitter and receiver is an ideal wireless audio solution for various situations and uses. 2、With the included 3.5mm cable and 3.5mm to for RCA cable, can be widely used in computers, laptops, home stereo systems, earphones, smart phones, MP3 players, CD players, etc. 3、Receiver mode, wirelessly transfer audio from Bluetooth‑enabled phones, tablets or computers to speakers or headsets. 4、Transmitter mode, to wirelessly stream audio from a non‑Bluetooth TV, home stereo system or CD player to a Bluetooth headset or speaker. 5、The transmission distance is about 10m/32.8ft, with the working time about 10 hours after full charged. Specification Item Type: Audio Receiver Transmitter Material: ABS Color: As Picture Shown Weight: Approx. 88.0g/3.1oz Model: BT-13 Bluetooth Version: V5.0 Battery Capacity: 200mAh Battery Type: Li-ion Battery Bluetooth Support Protocol: A2DP/AVRCP Support Multi-Format Decoding: MP3, WAV, WMA, APE, FLAC Charging Input Voltage: DC 5V Power Supply: 3.7V Low Power Consumption: less than 20 mAh for playback, 0.6-4.5 mhA for connected standby, within 2 mAh for shutdown Working Time: 10 hours Charging Time: 2 hours Transmission Range: 10m/32.8ft (open area) Signal to Noise Ratio: Above 95db Package List 1 x Audio Receiver Transmitter 1 x Manual 1 x Charging Line 1 x Connection Cable