OHO Bluetooth Sunglasses with Open Ear Technology Make Hands Free, Design for US and Comfort Wearing. <br> <br>Single Button Control for Power On and Calls, Enjoy the Freedom of Wireless Mobile Calls, Free Music, and more. <br> <br> Bluetooth Glasses is Compatible for all Version or Brand Name Mobile Phones, can Connect Two Smart Phones and Answer Calls from either one, but It is Not Bone Conduction sunglasses and not for small head fitting.<br><br><b>Specifications:</b><br>* Open Ear Speaker Wireless Bluetooth Sunglasses<br>* Music or Sound Come Out from Both Arms (Earphone Accessory Used when Needed<br>* CSR Bluetooth High-end Chipset<br>* US Safety Lens Standard ANSI/ISEA Z87.1-2015 Impact Resistant for Eye and Face Protection Devices <br>* 100% UV Protection Polarized Lens and FDA Audited<br>* Sweatproof Circling Sports Bluetooth Sunglasses<br>* Perfect Combination of Bluetooth Headphone and Sunglasses <br>* Transmit Distance:30ft <br>* Built-In Bluetooth 4.0 Speakers, Smart Assistant Voice Command,<br>* Voice Dialing from Your Phone List<br>* Speak for Directions, Weather or Traffic Updates<br>* Speak to Play Music from Your Favorite App Stations: Pandora , Spotify<br>* Bluetooth Sunglasses Compatible for All Android and IOS<br> * Bluetooth Protocol：Headset;Hands-free A2DP;BLE;SPP <br>* Listening Music for 3 hours by Open Ear Speaker<br>* Charging Time: 2 Hours by USB Cable<br>* Working Temp：-5℃ to 40℃<br>* Storage Temp：-20℃ to 60℃<br> <br><b>Accessory:</b> <br>*1M Data/Charging USB Cable<br>*Protective Cleaning Bag<br>*Instruction Manual<br>*Cleaning Cloth<br>*Hard Case