ITEM NAME:S7 Wireless Bluetooth 4.1 Sports Earphones Neckband Stereo Earbuds Headset #JT1 Product Description Description: Specifications: Bluetooth version: 4.1 Battery capacity: 100 mAh Charging time: 2 hours Call duration: 8 hours Music duration: 8 hours Supporting protocols: A2DP, AVRCP, H-SP, H-FP Input charging standard: DC5V-500mA Bluetooth operating frequency: 2.400GHz-2.480GHz Best call distance:
