This Bluetooth Headset Headphone Sunglasses Is The Perfect Combination Of Durable And Fashion. You May Wear It And Enjoy Music Anytime Anywhere ,Getting Hands-Free Phone Call,Control The Phone To Take Pictures Of Yourself .It Also Can Filter Ultraviolet And Protect Your Eyesight At The Same Time. Bluetooth Vesion: 4.1,Longest Wireless Range: 10 Meters Talk Time: 6 Hours,Stand-By Time: 150 Hours,Charging Time: 3 Hours Noise-Signal Ratio: 15 Decibel Resolution,Frequency: 2.402ghz -2.480ghz,Receiver Sensitivity: 0dbm (Degree: 11) Polarized Lenses Which Can Filter Light And Protect Your Eyesight,Fashionable Design With Foldable Eyeglasses.Earphones Built Directly On To The Frame, And Can Be Adjusted For Comfortable Fit Wireless Listen To Stereo Music, Set Aside To Answer The Call Automatically Converted,Built In Chargeable 150mah Lithium Battery,Control The Phone To Take Pictures Of Yourself,The Wireless Set Aside To Answer Phone Calls,Flip-Up Glasses