Feature: 1. *BT5.0 for superior wireless performance (backwards compatible with BT V5.0 and V2.1). 2. *Have memory for the paired devices. 3. *Maximum transmission distance more than 33 feet, and it can last 15 hours on a full charge, which will take 2 hours with the USB charging cable. 4. *All-in-one solution for BT receiving and transmitting. 5. *Plug and play, no driver or software needed. Specification: Features: *BT5.0 for superior wireless performance (backwards compatible with BT V5.0 and V2.1). *Have memory for the paired devices. *Maximum transmission distance more than 33 feet, and it can last 15 hours on a full charge, which will take 2 hours with the USB charging cable. *All-in-one solution for BT receiving and transmitting. *Plug and play, no driver or software needed. Specifications: Model number: Tx8 Color: Black BT Version: 5.0 Battery Capacity: 3.7V / 300mAh Working Hours: 8-12 hours Charging Current: 120mA, 2 hours quick charge Frequency Response: 20Hz-20KHz Rated Input: DC5V / 500mA Sensitivity (SPL): 100 ± 3dB Package Size: 11 * 7.6 * 2cm / 4.33 * 2.99 * 0.79in Package Weight: 65.7g / 2.32oz Package List: 1 * BT Audio Transmitter & Receiver 1 * 3.5mm Audio Cable 1 * USB Charging Cable 1 * RCA Cable 1 * User Manual (English) Package List: 1 * BT Audio Transmitter & Receiver 1 * 3.5mm Audio Cable 1 * USB Charging Cable 1 * RCA Cable 1 * User Manual (English)