Tobestronger Smart glassesSunglasses Bluetooth Headset Headphone For for iPhone 4S 5S 5C 6 6 plus, Samsung Galaxy S5 S4 S3 ,All Andorid Smartphone with bluetooth function (black) Features: voice control, smart touch Main applications: the driver, riding, outdoor sports, leisure and tourism Prevent glare, natural color, visual clarity, ease eyestrain Can withstand high impact, safety, can be removed install Built-in rechargeable battery, can be used repeatedly, standby time of up to 3-4 hours