SoundPal ST16 Wireless Bluetooth Headphones V4.1 Sport Stereo in-Ear Noise Cancelling Sweatproof Headset Secure Fit- perfect workout headphones that are snug and secure so the headphones stay put while running, biking or at the gym Wireless Headphones that work with all smartphones, tablets and music players with Bluetooth connection Noise cancellation technology reduces outside noises, enable clearer microphone sound Long battery life allows the headphones to play up to 5 hours of continuous music at a time Convenient controls of bluetooth headset allow you to answer calls, skip tracks and pause/play your music without the need to reach for your phone