HEIBAS Bluetooth Headset Wireless Bluetooth Earpiece with 500mAh Charging Case 72 Hours Talking Time Built-in Microphone for iOS Android Cell Phone V5.1 Hand-Free Headphones with USB Dongle

SPECIFICATIONS Model: G7 Version: V5.1 Transmission range: 10m Supporting Protocols: A2DP/HFP/HID/SPP/AVRCP Headset battery capacity: 100mAh Case battery capacity: 500mAh Charging time: About 2-2.5 hours Talking time(Single headset): About 18-23 hours Talking time(With case): About 72 hours