Specifications : 1.Bluetooth Version : Bluetooth 4.1 2.Audio Code:APTX 3.Maximum working Range : 33 feet (10m) 4.Charging time : 1~2hours 5.Working time : About 8 hours 6.Standby time : Over 100 hours 7.Waterproof : IPX6 High quality sound : CSR8645+APTX Super sound quality brings you to a unique music world, and makes your call clear and smooth. CVC6.0 smart denoise feature makes your phone call clear, you will unconsciously focus on your favorite music, but never miss any word from your phone call. Design : Human engineering design : Comfortable silicone earphone designed as per principles of human engineering with silicone wireless earphones which get rid of complex ear hooks. IPX6 Waterproof : You needn’t to worry about any damages to your bluetooth headphones resulted from sweat or rain when you do exercises outside. Built-in magnet : The built-in magnetic in the wireless earbuds can be quickly locked to your neck to prevent falling when the earphone is taken off. In-line Button Control : The wireless headset with microphones and volume control buttons, convenience to answer calls or listening to music Packaging include : 1×Naporon E10 Bluetooth Earphone 6×Interchangeable Ear Hooks 10× Interchangeable Ear Tips(XL,L,M,S,XS) 1×USB Charging Cable 1×Line Buckle 1×User Manual [Z]35