The QY11 Bluetooth Headphones feature premium tech like Bluetooth 4.1 and apt-X, expertly configured and tuned for unbeatable audio quality. Nano-coating technology guards against sweat and haze, while comfortable memory metal earhooks hold the headphones securely in place - perfect for running, cycling, and working out! Enjoy an incredibly long battery life of up to 7-8 hours talking/playing time and 250 hours standby. Connect to your TV to watch movies in the middle of the night without disturbing those around you. Compatible with most Bluetooth devices, the user interface is incredibly easy to use - unleash your own personal audiovisual space!