Specification: Item Type: Smart Glasses_x000D_Material: ABS_x000D_Bluetooth Protocol: 5.0_x000D_Receiving Range: Approx. 10m / 33ft_x000D_Built in Polymer Lithium Battery: 200mAh (included)_x000D_Charging Time: 2-3h Features: 1Multifunction Use: Not just a pair of Bluetooth glasses, but also a pair of sunglasses that not only block you from the sun when you're driving or walking at noon, but also help you answer calls. 2Noise Cancelling: Directional technology can put sound into a designated position, which can effectively reduce external interference to you. Intelligent noise reduction, external expansion channel. 3Bluetooth 5.0 Technology: Bluetooth 5.0 wireless transmission, about 10m / 33ft receiving range, high speed and stable connection. Built in 200mAh polymer lithium battery (included), 2?3h charging time. 4With Headphone: Whether it is calling or listening to music, it will not be heard by other people, effectively protect your information, and solve the damage to your ears caused by wearing headphones for a long time. 5Applicable Scene: The smart glasses are perfect for cycling, running, driving, boxing, fishing, basketball, shopping and other outdoor activities, you can easily dial in high quality sound. PackageList: 1 x Glasses 1 x Wiping Cloth 1 x Storage Box 1 x Manual 1 x Headphone 1 x Charging Cable 1 x Storage Bag