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. Voice control also provides 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 staying aware of everything around you.
HD MICROPHONE: Provides high-quality sound during calls.
ULTRA-SLIM UNISEX DESIGN: Mobile-phone-thickness design with a flexible material frame. Very lightweight, like the weight of normal sunglasses. Exclusive US-style design that is tidy, unisex, and comfortable to wear while relaxing and exercising.
SAFETY GLASSES: Transitional technology lenses change from light gray to dark gray outdoors under sunlight and from dark gray to light gray indoors. Impact-resistant eye and face protection. Anti Eyestrain, Anti Scratch, and Anti Smudgy