IPX7 WATERPROOF AND IPX7- RATED SPLASHPROOF : Unlike most sport headsets, Earphone is built for your active lifestyle, boasting a certified IPX7 rating that ensures they withstand dripping sweat, heavy rain and even a splash from your sports drink !COMFORTABLE FIT : Included S/M/L eartips and in-ear earhooks ensure a comfortable and secure fit for everyone. Neckband design prevents troublesome wires from tangling during your workoutHIGH-FIDELITY SOUND : Connect your phone or tablet via Bluetooth 4.1 and instantly begin to enjoy crisp, skip-free stereo sound from up to 32-feet away.INCREDIBLE PLAYTIME : Provide an impressive 10-hour playtime on a single charge, allowing you to play through a week's worth of workouts! (Playtime varies according to volume level and audio content)100% MONEY BACK GURANTEE AND 1-YEAR WARRANTY: If headphone has any production failure. For HELME customer satisfaction has highest priority .Buy without risk! If you have any issues with your sport bluetooth headphone within 12 months, we'll replace it at no cost