The product is made of specially selected ABS rubber material and feels exquisite. Choose from an array of colours such as dark blue, grey, red, light green. The advanced 4.0 version of the CSR BC8 series of chips in the bluetooth module uses low power, and a high-profile line with Bluetooth v4.0 + EDR. The sound quality is enhanced with its 32 levels of electronic volume adjustment, and duo 3W speakers; the special wall hook can be used with a silicone lanyard; the product supports dual connection for bluetooth phone connection dual program in unobstructed space (ten-meter range).