8S Bluetooth 4.1 sports headphones with hands-free and control pad

8S Bluetooth 4.1 sports headphones with hands-free and control knob. • Ergonomic design with ear hook extension, specially designed for sports. • Bluetooth 4.1 + EDR: low consumption connection. • High quality sound. • Built-in microphone and control knob with volume adjustment, control between songs and play / pause. Call control. Charging by Micro Usb connection; directly to the mains or any USB device that allows it. Frequency response: 60 - 20,000Hz Sensitivity: 102dB Battery: 110mAh Playtime: up to 6 hours. Bluetooth range: up to 10 meters, without obstacles. PVC Metal Alloy