Square Big Frame Flat Top Sunglasses

Overview: These BT Smart sunglasses are great companions for your everyday life. It's the perfect combination of BT and polarized glasses. No matter the situation, you'll have a clear view. Furthermore, it allows you to enjoy the freedom of wireless music and hands-free calls. Suitable for outdoor activities such as cycling, fishing, sightseeing, mountaineering, golf, etc. Features: BT Headphones Perfect Match The sunglasses perfectly match polarized glasses with BT 4.1 headphones. Compatible with almost all BT-enabled audio devices. Polarized glasses can eliminate glare, relieve eye fatigue, provide a clear view, and provide good impact resistance to protect your eyes. Button Control 3 buttons make it easy to control music and calls - answer/end calls, play/pause, previous/next song, and volume +/-. PREMIUM MATERIALS The fashionable eyeglass frames are made of high-quality materials that are lightweight, flexible, and durable. The lens can be rotated, removed, and replaced. Hands-free microphone. The built-in microphone s hands-free calls. Suitable for outdoor activities such as cycling, fishing, driving, hiking, golf, etc. Specification: Frame color: black Lens color: gray black Working distance: 10m (without obstacles) Frequency response: 20-20KHz Headphone extension length: 14mm Headphone rotation degrees: 270 Battery capacity: 150mAh rechargeable lithium polymer battery Music playback time: 6 hours (depending on music volume) Charging voltage: 5V Charging time: 2 hours Charging port: micro USB port Item size (unfolded): 17.5*16.5*3.8cm/6.89*6.49*1.49inch Packing list: 1* Smart glasses 1* USB cable 1* Cleaning cloth 1* Storage bag 1* User manual