LAFEINA Wireless Bluetooth Headphones Sunglasses Music Smart Sun Glasses with Stereo Headset for Smart Phone Pc Tablet Bluetooth Devices with 3 Pair Replacement Lens(Red with 3 Pair Lens) Wireless Bluetooth 4.1 Music sunglasses ,can listen to stereo music. With Previous/Next Song control, Volume Up/Down control. Support both headset and hands-free profiles, calling voice and Reporting phone number function when calls coming. Polarized Lenses provide the best protection for eyes. Effectively prevent ultraviolet rays, bewildered light and harmful blue light. Designed with a flexible hyraulic rod headset and flip-up lens, perfect combination of durable and fashion. Max. volume 88db with a better sound quality. Make you enjoy music in the sun without disturbance and protect your eyes and eyesight. The polymer 150mAh battery in the Bluetooth headphones wireless device provides 10 hours of talk & playing time. Hands free answer call when you are driving, fishing, hiking or riding a bicycle. It can pair with devices up to 10 meters away(without obstacle).