WoSports&reg; S6 Smart Sunglasses Wireless Bluetooth 4.0 Stereo Headset Headphone Polarized Glasses, Hand-free Phone Answer/Call Music Function with Smarthpone Iphone5s, 6 plus Samsung for Riding Driving Fishing Running Golf and All Outdoor Activities - Black TAC have the function of explosion-proof polarized lens and has strong resistance to impact and permanent,which is one of the world's best lenses, TAC can protect the eye efficiency when hit accidently Advanced stereo + CVC 6.0 de-noising technology can block outside noise, prevent auditory fatigue, whether it is in motion, walking or driving . If the unit a) does not work Bluetooth Pairing: Long press On/Off Button for 5 seconds,until red light and blue light flash alternately, to enter pair mode:(please note: must long press button for 5 seconds) b) the sound goes out The bluetooth transmission distance is 10m c) they can't stop vibrating We recommend turn off the device and restart built-in rechargeable lithium ion batteries, cooperate with double power management chip, standby can be up to 10 days, call time is 8-9h and music time is 8-9h. WOSPORTS S6 is a sport bluetooth smart sunglasses, adopted British CSR4.0 + EDR chip, it can improve the bluetooth data transmission, at the same time it can connect several bluetooth equipment. Headset magnetic adsorption design; Bluetooth yituo two connecting two mobile phone/digital devices at the same time; A key voice and music; shake motor prompt function;Voice call/answer the phone