Bring your music anywhere, but ditch the wires with SYNC by 50 Over-Ear Wireless Headphones. Integrated Kleer technology provides 16-bit lossless digital sound and up to a 50' range. SYNC by 50 wireless headphones also provide a unique feature of providing the ability to sync up to 4 headphones to a single audio source. The lithium ion battery provides up to 15 hours of listening time on a full charge and at average volume. Additional features include: professionally tuned digital EQ, full on-board controls with bass boost, volume control, and mute, custom 40mm driver, soft memory foam ear cushions, and passive noise cancellation. SYNC by 50 is currently available in 2 colors: shadow black and ghost white. Each SYNC by 50 includes: wired mic cable (provides the ability to turn the wireless product into a wired product), 3.5mm wireless transmitter, hard-shell carry case, Micro USB charging cable, USB/AC adapter, Airline plug adapter, soft touch cleaning cloth, owners manual, and product brochure. SMS Audio was developed by international recording artist, actor, and philanthropist Curtis "50 Cent" Jackson as the next step in the evolution of personal audio technology. More than simply headphones, SMS Audio allows you to experience the power of music on your own terms. Smart, stylish and comfortable, these devices provide you with an escape into the lush world of professionally-tuned, acoustically perfect music...anywhere, anytime, and any way you want to hear it.