Bluetooth Headphones, SmartBB(TM) Bluetooth 4.1 Stereo Magnetic Earphones, Secure Fit for Sport, Gym with Built-in Mic(black/red) Super Bluetooth 4.1 version. Advanced CSR8635 technology makes it More stable, More energy saving. Support Hi-Fi music and HD calling. Suitable for iPhone, iPad, Android and most Bluetooth enable devices. Selectable soft medical grade earbuds, fit different ear size well, fell comfortable even wearing long time. And the buckle makes it possible to get your most favorable length. Magnetic attraction design: hang like a necklace around your neck, and a 10-meter working distance, our sport headphones will let you enjoy music when running, gym, sports or exercise and other activities. Perfect For Sport. With the Magnet Attraction design you can fix two earplugs together while not using. Package includes:1x Sport bluetooth headset; 3 x Ear bud(pairs); 1 x Ear hook(pair);1x Buckle; 2x Cable clips;1x USB Charging Cable(30cm); 1x User Manual