Feature: 1. Multipurpose Integration: Smart audio sunglasses are not just fashionable sunglasses, but also an audio device. They allow you to listen to music or take calls while wearing them, offering the convenience of dual functions in one. 2. High Level UV Protection: Equipped with UV400 level ultraviolet protection, they effectively block the UV rays, making them an essential accessory for outdoor activities and cycling. 3. High Efficiency Battery: Featuring a built in 160mAh lithium ion battery, these glasses provide up to 4 hours of playtime and 5 hours of call time with just 1.5‑2 hours of charging, and a remarkable100 hours standby time. 4. Bluetooth Connection: Supporting Bluetooth V5.3+EDR, these glasses offer a wireless range of 10‑15 meters, ensuring fast and stable connection. They are equipped with a built in microphone for easy voice calls and voice commands. 5. User Friendly Design: Made from durable and lightweight TR material, these glasses are comfortable to wear. The magnetic charging design makes charging quick and easy. Specification: Item Type: Smart Glasses Material: TR UV Protection Level: UV400 Connection: Bluetooth V5.3+EDR Supported Protocols: HFP/HSP/A2DP/AVRCP Connection Distance: 10-15M Microphone: Built in Playback Time: Approx. 4 hours Talk Time: Approx. 5 hours Charging Time: 1.5-2 hours Standby Time: Approx. 100 hours Battery Type: Built in 160mAh Lithium ion Battery. Package List: 1 x Smart Glasses 1 x Glasses Cloth 1 x Glasses Case 1 x User Manual 1 x Power Cable