Headset: Get these sports Bluetooth wireless headphones! Activity: Perfect for when you're at the gym or going for a run, these neck-mounted headphones will stay in place whilst you move around! Bluetooth: Connect straight to your device for easy wireless listening. Microphone: Built-in microphone to answer calls when you're on the go! Specifications: Charging power: 5V/80mAh. Sensitivity: 103db +/- 3dB. Colours: Choose from a stylish red or black. Sports Bluetooth Wireless Headset | Red | Living Social