Features: 1.Built-in microphone 2.Noise reduction, clear sound 3.Protein leather earmuffs for extra comfort 4.Support to extend tf card up to 8GB of memory 5.Bluetooth V4.0 EDR module, fast and smooth transmission specification: Built-in microphone Noise reduction, clear sound Protein leather earmuffs for extra comfort Support to extend tf card up to 8GB of memory Bluetooth V4.0 EDR module, fast and smooth transmission Ovleng mx666 wireless bluetooth music headset for music lovers Built-in 300mAh rechargeable battery, working hours for 8-10 hours Great for watching movies, listening to music, or making / receiving phone calls by hand : Condition: 100% Brand New Item Type: Headphones Material: ABS Color: Black + Red Weight: Approx. 303g / 10.7oz Transmission Distance: Less Than or Equal to 10 Meters Battery Capacity: 300mah Charging Voltage: DC5V Working Hours: Music 6-8H, call 8-10H Bluetooth version: 4.1 Microphone: Built In Compatibility: for iPhone, for Samsung, for Sony, for HTC and other smart phone for Ipads, for Galaxy Pads and other bluetooth pads Package list: 1 * Headphones 1 * Chinese and English s 1 * Charging Cord