Is it bothersome to wear sunglasses and earphones while sports or cycling? In fact, you only need the following product to solve this problem perfectly, Main Features Smart Device: Can answer calls and play music and switch freely. Equipped with stereo headphones, adjustable to 270 degrees for comfortable wearing. Protect Your Eyes: Polarized material blocks up to 99% of UVA/UVB rays. It is best to protect your eyes and see clearly also. Free Your Hands: Wireless connection within 10 meters. Light and convenient, it frees your hands and ensures safety during driving. Sensitive Keys: Switch functions conveniently. You will not miss every call while enjoying music. Powerful functions: Accord with the standard of Bluetooth V4.1. Up to 5 hours of music playback, 8 hours of language calls, and up to 150 hours on standby. Compatibility: -Compatibility. Full support for 95% of digital products on the market with Bluetooth, ready for use anywhere, anytime.