Open Ear Smart Glasses, UV400 Z87.1 Lightweight Bluetooth Sunglasses Up to 10H Playtime, Hands-Free Calling, Music Playback, Voice Control, Photochromic Lens, Unisex for Daily Wear & Outdoor Use

VOICE CONTROL SMART GLASSES: Sunglasses with a speaker and smart assistant technology for hands-free phone calling and answering. Easily speak to Siri, Cortana, and Google Now to connect to your favorite music stations, including Pandora, iTunes, Spotify, and more. Easily speak for directions, weather, and traffic updates.
VOLUME UP AND DOWN BUTTON: Audio glasses with volume up and down controls, as well as forward and backward controls. Battery playing time is up to 10 hours.
OPEN-EAR BLUETOOTH SPEAKER: Bluetooth sunglasses with an open-ear speaker system allow you to listen to your favorite music while hearing everything around you.
HD MICROPHONE: Offers high-quality sound during calls.
ULTRA-SLIM UNISEX DESIGN: Mobile-phone-thickness design with a flexible material frame. Very lightweight, like normal sunglasses.
US-STYLE DESIGN: Neat, unisex, and comfortable to wear while relaxing and exercising.
SAFETY GLASSES: Blue-light-blocking technology lenses for computer reading and gaming. The transitional technology lenses change from clear to light gray outdoors under sunlight and from light gray to clear indoors. Impact-resistant design for eye and face protection. Anti-eyestrain, anti-scratch, and anti-smudging, compatible with Anti Eyestrain, Anti Scratch, Anti Smudgy