In-ear Wireless Headphones. Connect to any Bluetooth-enabled device for amazing sound quality without the hassle of wires. Enjoy the same elevated experience and incredible sound JBL has been delivering to concert halls, studios and living rooms for almost 70 years.These headphones are ergonomically designed to fit the unique contour of your ears. You'll experience unprecedented comfort. Listen longer and enjoy it more. JBL® Everest™ Elite 100 is legendary sound in an on-the-go design. Bluetooth 4.1 technology enables wireless connectivity, JBL Pro Audio Sound delivers a dynamic listening experience, and ergonomic earpieces allow for unprecedented fit, and comfort in your ears. A rechargeable battery offers 8 hours of performance, and its built in microphone with echo cancellation technology provides more natural sounding voice calls. Enjoy ultimate sound - unbound. Color: Black.SpecsDevice CompatibilityBluetooth YesGeneral SpecificationsDynamic frequency response range 10-22kHzDriver sensitivity 96dB/1kHz, 1mWMaximum SPL 103dBRated power input 5mWMicrophone sensitivity -42dBV/PaBattery type Polymer Li-ion Battery (3.7V, 50mAh x 2)Music play time with BT on up to 8 hoursAudio SpecificationsFrequency Response 10-22kHzSpeaker SpecificationsDriver 5.8mmDimensionsWeight (g) 16Earbud dimension W x H x L (mm) 14.7 x 14.8 x 30.4Mic housing dimension W x H x L (mm) 9.1 x 7.2 x 42.3