ZONOKI B198 Wireless Sports Magnetic Bluetooth Headset V4.0 Hi-Fi Headphone Sweatproof earphone with Mic for iphone samsung - Red Bluetooth version:V4.0 Chip:CSR Operating range:10M Battery capacity:80mAh Call time:6 hours Charging time:1-2 hours Voice support:Yes Support protocol:HFP,HSP,A2DP,AVRCP Noise reduction:DSP