Very glad to see you in my shop. Features: Bluetooth version:5.2 Support protocol:A2DP,HFP,SPP,HID,PBAP Bluetooth range:≥10m Battery capacity:75mA Charging time:About 1h Standby time:120h Ca more→ll time:About 15 h Music playing time:About 10h Speaker size:13mm Frequency:20Hz-20,000Hz Impedance:16Ω Sensitivity:103±3dB Charging specification:5V,1A Operating voltage:3.7V Packagingwhat's in the box: 1 * Wireless Bluetooth Earphone 1 * USB charging cable 1 * User manual Wish you a happy shopping --------------------- Please note: The Bluetooth headset is not suitable for swimming, bathing, getting wet on rainy/snow days, soaking in water, etc. It can only prevent a