COOLEAD Wireless Bluetooth 4.0 Headphones Built-in Microphone Foldable Headphones On Ear Headphone for iPhone 5S 5C 5 4S 4, Samsung Galaxy S2 S3 S4 S5, Galaxy Note II III, and HTC, etc(Black) Great Sound Quality -HiFi wireless bluetooth 4.0 with 40mm speaker, and noise reduction technology, talk clearly, best audio performance Human Body Engineering Technology - Equipped with protein leather earpads, ergonomic design, soft touch and good air permeability. Special Design - Folding compact portable design for convenient carrying and storage;With music, volume and call control buttons design you can answer calls and control your music;Built-in microphone you can stay connected to your mobile with hands free calling. Internal Li Ion Battery - Rechargeable battery for up to 12 hours listening between charges. Practical-Not only wireless, also can be used as wired headphone (Provides a simple 3.5mm wired connection of a variety of devices).