Bone Conduction Gl, Open-Ear Headphones Bluetooth, Polarized Photochromic Sungl Anti Blue Ray, IP6 Waterproof Audio Gl, Hand-Free Calling and Music, Smart Gl for Women and Men

【Bone Conduction Headphones】smart audio sungl equipped with bone conduction headphones, delivers immersive sound directly to your inner ear by sending vibrations through the bones in your skull and bypassing the eardrum; Thus protects your ear from the hearing loss. Open-ear design keep your awareness of surroundings while listening.
【Photochromic Lenses】featured with UV420 transition lenses, the audio sungl will turn dark when in outdoors based on sunglisht intensity and return clear when indoor. Blue light gl blocks blue ray emitted from electronic devices screens. A perfect combination for both indoor and outdoor activity.
【Hand-Free Calling and Music】with this wireless smart gl, you don’t have the hassles of picking up your phones while you are driving or jogging. The buttons in the frames provide easy access to control volume, answer/hangup call, switch songs, pause/replay music etc. For best listening experience, standard 50%-60% volume is recommended; maximum 100% volume may lead to echo during calling.
【4.2 Version Bluetooth and Dual Pairing】the wireless headphone Bluetooth provides access to iOS/Android devices, like cell phones and laptop, and enables simultaneous dual Bluetooth devices pairing. 4.2 Bluetooth ensures fast&stable connection and up to 10 meters barrier-free wireless range.
【Great Battery Longevity&IP6 Waterproof】built-in 250 mAh battery fully charged within 2 hours can support 10 day of Standby, 4 hours of playback and 3 hours of conversation. Actual battery using time may differ from volume and sound source. IP6 waterproof rating endures raining or sweat from outside activity and easy maintenance.