Wireless Bluetooth Sports Stereo Earbuds - 100% Unconditional Guarantee High quality sound and extremely lightweight, these earbuds will let you enjoy your music in a variety of activities including running, walking, cycling, working out and more. Ergonomic and functional design ensures a comfortable fit with controls that are incredibly easy to access. They are fully exercise-proof with 10 meters of working distance. Universal device compatibility means that these earbuds will work with most bluetooth devices including iPhone, Android Smartphones, iPads, tablets, iPods and more. Long Battery Life will outlast even the longest workout. The Samsali Tec Wireless Bluetooth Headphones provide up to 4 hours of listening time and around 175 hours of standby. 100% Unconditional Guarantee. Buy with confidence when you order from Samsali, knowing that you're protected by our no-questions asked money back guarantee and world class customer service!