1BT 5.0: The wireless glasses are paired with the new version BT 5.0 technology to achieve low power consumption, wide coverage and faster transmission performance. 2Comfortable To Wear: Bone conduction technology, comfortable to wear for a long time, does not damage hearing,you can hear ambient sound normally when using. 3Dual Speakers: The smart music glasses are designed with dual speakers, the open speakers make the sound field wider, and the sound is clear and full of spatial layers. 4Multi Functional: BT glasses have built in high sensitivity microphone, support intelligent voice control, convenient and easy to operate, very suitable for driving, running, etc. 5High Quality Lenses: This music sunglasses are made of high quality TR90 lens material, which protects eye health and ensures the safety of outdoor use, it is suitable for travel. Item Type: Smart GlassesMaterial: TR90 + PCBT Version: 5.0Charging Voltage: DC5VBuilt in Polymer Lithium Battery: 100mAhChannel: Dual Speakers, StereoCharging Time: 90min 1 xSmart Glasses1 x Wiping Cloth1 x Charging Cable1 x Manual