1Bluetooth Glasses Speaker: The dynamic driver, unique sound cavity design avoid hearing obstacles. The open ear design helps you always pay attention to your surroundings to avoid danger and enjoy music at the same time. 2Open Ear Solution: The solution allows you not only to listen to music, answer calls, but also to hear notifications from the glasses, while still listening to the world around you. 3With Noise Cancelling Mic: Bluetooth 5.0 has a wide range of compatibility. Smart sunglasses have a built in noise cancelling microphone that allows you to make and receive calls. 4High Performance: 90 minutes charging time, 6 hours standby time and about 3-4 hours playing music time (based upon the difference in volume and sound source), about 4-6 hours continuous talking time. 5IPX7 Waterproof: Our wireless Bluetooth 5.0 sunglasses are designed for good waterproof effect, which can easily resist sweat and rain. The glasses are perfect for sports, music and calls. 6Widely Used: The smart audio glasses is perfect for cycling, running, driving, boxing, fishing, playing basketball, shopping and other outdoor activities, you can easily make calls with high quality sound. Item Type: Wireless Bluetooth SunglassesFrame Material: TR90 / Mixed MaterialLens Material: PC / TACFrame Color: BlackProduct Weight: Approx. 156g / 5.5ozBluetooth Protocol: 5.0Charging Time: 90 minutesBuilt-in Battery: Lithium Battery, 95mAhCharging Voltage: DC5VChannel: Dual Speakers, Stereo 1 x Glasses1 x Charging Cable1 x Cleaning Cloth1 x Manual Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.