Specifications:
 Wireless Version : BT5.0
 Transmission distance : 10 meters
 Frequency Response : 20~20kHz
 Rated Power : 8.5dBm
 Charging Case Battery Capacity : 250mAh
 Headset Battery Capacity : 40mAh
 Charging Times of Charing Case : about 2-3
 Input : 5V
 Play Time : about 5hrs
 Standby Time : about 50hrs
 Charging Time : about 1.5hrs
 Net Weight : 21g
 Charging Case Size : 65 x 27.5 x 33mm