8GB Sports water resistant MP3 Player Headset Stereo Running Headphone For Sport Lovers White Stylish and lightweight design , easy to take Built-in 8GB flash memory The two ends built-in magnetic, can automatically connect together and turn the headphone to an unique heart shape while not working Power Supply: Built-in rechargeable Lithium-ion battery, directly connect with PC via USB cable for re-charging .Batteries last for 8 hours.