ZephyVita Motorcycle Helmet Headphone - Bluetooth V4.1+EDR CSR8635 500mAh

[thin and comfortable design] The inner ear headset is thinner, a comfortable adjustment without tightening the ear long tours. Performance] The high power audio power amplifier provides a wide range of volumes for light music reproduction and calling in noisy environments. ABS Color: As an image shown Bluetooth version: V4.1+EDR CSR 8635 Frequency Range: 2.4026GHZ-2.480GHZ Transmission Distance: Approx. 10m/32.8 feet (transmission distance varies depending on environmental factors and cell phone bluetooth devices) Microphone distance: 1meter/39.4in Lipo battery: 3.7V/500ma Charging Time: 4-5 hours Standby time: about 240 hours headset 1 x 1 x Instruction 2 x Hook Adhesive Tape 1 x Cotton Microphone 2 x Screw 2 x Nut Note: