Bluetooth 4.0 Headphones, Optionz AH-220W Hands Free With Noise Cancelling And Built-in Mic + 12 Hours of Battery, Retail Packaging . (AH-220W) Bluetooth 4.0 Stereo Headphones- Advanced Bluetooth CSR 2.1+EDR version 4.0 Latest technology. Hands Free Wireless Freedom- Stream music directly from your smartphone or tablet, and be free of tangled cords. Charges quickly and lasts hours- The AH-220W headphones feature a lithium-ion battery that not only charges quickly, but gives you up to 14 hours of Call and music time. compact form factor and stylish design with Soft-touch rubberized exterior, for a smooth tactile experience. 40mm drivers for rich, full frequency response, Lightweight and comfortable on-ear design,USB charging cable included