Wireless Headphone Bluetooth Smart Sunglasses Headset Glasses C8-Lite - Grey Features: Adopting advanced Bluetooth 5.3 technology, ensuring faster and stable signal transmission Protecting your eyes from being hurt by strong sunlight It is also a headphone, providing you with crystal clear calls, making you listen to music freely It works with all Bluetooth-enabled devices Very suitable for outdoor activities, such as fishing, driving, skiing, sailing Make your lifestyle cool with this wireless music sunglasses headphone Specifications: Bluetooth version: 5.3 Transmission distance: 10 meters Music playback: about 4 hours Charging voltage: USB DC 5V Charging time: 1.5h~2h Battery capacity: 3.7V 120mAh Package Included: 1 x Bluetooth Smart Sunglass Earphone 1 x Charging Cable 1 x User Manual