Features: 2 in 1 Design, not only a sunglasses but also wireless earphones, great for driving, cycling, hiking, travel or outdoor use. Quality lens material, coated lens can effectively block the strong light, effectively protect the eyes, and make the color more realistic. Lightweight body, wear without burden, fits different face shapes, humanized design, comfortable without indentation. Bluetooth-compatible 5.0, stable connection without worry about disconnection, built-in microphone, all-round high-quality music enjoyment, high-definition call effect. Built-in 110mAh capacity battery, long music listening up to about 5hrs, and long standby up to 200hrs. Intelligent voice assistant, making intelligent online, talk easily with your favorite phone voice assistant. Specifications: Material: Resin Size: Approx. 178x75x80mm/7.00x2.95x3.14 inch Model Name: E30 Bluetooth-compatible Headset Glasses Lens Material: UV400 anti ultra-violet or blue-light lens Color: Black Battery Capacity: 110mAh Charging: about 2h Standby: 200 hours (with bluetooth-compatible connection) Working: about 5-7 hours Product Functions: novel appearance, bluetooth-compatible call, listen to music, navigation, voice assistant, rain/sweat proof, magnetic cable charging Bluetooth-compatible Protocol: BLE5.0 Microphone: built-in Channel: dual speakers, stereo How to Use: None In Ear Receiving Distance: about 9m/30ft Support Systems: Android&iOS-System Suitable Occassions: for Driving, Travel or Outdoor use Note: Please allow 0-1cm error due to manual measurement. make sure you do not mind before you order. Please allow slight chromatic aberration due to different display resolutions. Package includes: 1x E30 Smart Glasses