2015 NEW Syllable G600 Wireless Stereo Bluetooth 4.0 HIFI Headphone Earphone Headset with Adjustable 3.5mm Audio Cable + USB Charging Cable for IOS Phones Android Smartphones Samsung MP3/MP4 Laptop PC Tablet and Any Device with 3.5mm Jack/Bluetooth Bluetooth V4.0 wireless technology, compatible bluetooth 3.0V, Bluetooth 2.1V; Exclusive patent of appearance design, Ear muffs size adjustable. Skeleton plastic material with shape memorisation. Equipped with the play button, hands-free music playback and calls reveiving/refusing; Support wired mode, can be power-supplied through 3.5mm audio cable from your phone or tablets, PCs. Large diameter of 40 mm horn and HIFI speaker, phonoreception more shocking. Stronger expression in low frequency parts;Two built-in high sensitive microphones, noise reducing like most high-end cellphones. Cortical earmuffs design, comfortable wearing, ventilation performance. Built-in Low-loss Lithium battery with 12 hours working time and 2 hours fast charge capability. Very good choice for listening to music, watching movie, chatting online etc. It is also convenient for make phone calls. Packages:1Wireless Bluetooth G600 Headphone;1Storage bag;1USB Charging Cable;13.5mm Audio Cable;1Warranty Card;1User Manual.