BPULS Bluetooth Wireless Stereo Bass Hearphone,Sport Running Gym Exercise eardphones,Flexible Earhooks-In Ear Headphones with Heart rate monitor and GPS positioning Healthy exercise guarantee by Heart rate monitor: Overload exercise cause rapid heart rate, heart rate monitor can alert you while your heart beat too fast, ensure the exercise will not cause unhealthy Protection system: Comfortable ear gels that block out external noise and protect you against sweat and moisture damage Compatibility: Suitable for iPhone, iPad, Samsung, HTC, laptop, CD player, MP3, MP4 and other any audio devices with 3.5mm Noctilucent shape design features: At night, the headset appears luminous function, make you more outstanding. Hifi sound quality, waterproof & sweatproof design, Wireless design free sports, wear comfortable and stable, long working time. Portable sport belt: Package with sports belt, you can carry your phone or other small objects when you exercise. Realization edge sports to enjoy listening to music."They stay in your ear":It will actually stay in your ear with adjustable inserts and around-the-ear clips would fall right out to stay snugly in your ear even while running.