"Specifications:
-Color: Black-Bluetooth version: CSR4.1-Job scope: > 10 meters -Standby time: > 180 hours-Life time: > 3~6 hours-Charging time: 1-2 hours-Support agreement: A2DP, AVRCP, HSP, HFP-Frequency response: 20 hz - 20 KHZPackage list:
1 x Bluetooth Earphone1 x USB Charging Cable1 x User Manual"