Specifications: Model number: SD-G3 Product name:Wireless Smart glasses Bluetooth-compatible:V5.0 Bluetooth-compatible modead HEADset, hands-free A2DP Speaker Type:Bone conduction/Audio speaker Charging Method :USB interface Work range:15m Frequency:2. 4GHZ Play Time about :3 hours Battery Capacity:110mAh Standbabout :80 hours Charging Time :1.5hours Charging input :DC 5V 1A Net Weight :33g Lens colors: Black/Bule/Night-vision lens Frame colors:Black Specifications: 1. Bone conduction smart audio music wireless bluetooth sunglasses 2. High quality frame, TAC/UV400 Polarized sunglasses 3. Build in simple control touch function 4. Bluetooth-compatible Realtek 8763/ 5.0 version compatibility stability functionality 5. Support track Previous, next track, pause, play, phone call 6. One MFB key to switch on and to pair 7. Bluetooth-compatible Protocol support: A2DP/AVRCP/HFP/HSP all Bluetooth-compatible devices 8.12.5mm guide Bone vibrator 9. Earphone The Power State of the Level display to on smartphone user 10. Lithium ion battery polymer 160mAh 11. Low energy consumption with fast charging 12.4 hours to play, 240hrs standby 13. Bone conduction technology for external safety 14. Small lightweight design with great features 15.Ergonomic design and waterproof construction and sweat proof of 16. Easy operation to manage with the Voce promtion 17. Private model and Variopian Mode Choices with Black/White/Red/Pink Package Included: 1 * wireless smart glasses 1 * glasses case 1 * spectacle cloth 1 * glasses bag