Up to 36 hours of overall playtime Bluetooth® with up to 33 ft (10 m) wireless range Earbuds connect to device individually Total 20 Hours Playtime: The earbuds charge automatically in the case. Playtime lasts for over 9 hours from a single charge while the portable charging case can extend it to 36 hours and provide you with all-day battery life. Ideal for indoor and outdoor sports activities IPX5 waterproof rating applies to the earphones, not to the charging case.