The OVEVO B08 Bluetooth Headset adopts advanced CSR8645 chip, support APT-X lossless music. 26g only, ultra lightweight. Comes with 4 pairs of earmuffs for comfortable wear. Metal composite diaphragm and moving coil unit, gives you stunning sound effect. Bluetooth 4.1+CSR Adopting CSR8645 chip, support APT-X lossless decode technology, can improve the transmission of sound and enhance the wireless sound quality. Composite Structural Acoustics Moving coil unit and metal composite diaphragm can give you stunning sound effect, restore the original music. Light Weight Only 26g Ultra lightweight, easy and convenient to carry without adding any burden to your ear. IPX4 Waterproof Sweatproof, no need to worry that sweat will permeate the earphones while exercising. Inline Remote and Mic You can control the playback of music, adjust the volume and answer or end calls with a pinch of the cord. TPE Cable Flexible and tangle-free, pull resistant and durable for long terms use. Specifications Brand OVEVO Model B08 Type In-Ear Function Answering phone, Bluetooth, microphone, noise canceling, song switching, sweatproof, voice control, waterproof Language Chinese, English Material ABS Connectivity Wireless Application Sport Impedance 32ohm Compatible with Computer, iPod, Mobile phone Product weight 26g Package size (L x W x H) 12.80 x 4.20 x 19.00 cm Package Contents 1 x Earphone, 1 x User Manual, 1 x USB Cable, 2 x Ear Caps