JAM Transit Mini Wireless Earbuds, Works with Iphone, Android, Sweat Resistant, Commute Headphones, Hands Free Calling, Up to 7 Hours Playtime, HX-EP315GY Grey Bluetooth: connect wirelessly with any Bluetooth device in a 50-foot range Speakerphone: answer calls directly from your transit buds Sweat resistant: Lasts through tough workouts Secure lock: ear tops stay in your ears throughout your workout. Magnetic Connection: secure buds around your neck when not in use Rechargeable: charge for 1 hour to provide up to 7 hours of play time