JBL Everest 100 delivers legendary sound in a portable design. The Bluetooth 4.1 technology enables wireless connectivity, while JBL Pro Audio Sound provides a dynamic listening experience, and the ergonomic ear tips ensure an unprecedented fit in your ears. The rechargeable battery offers 8 hours of performance, and the built-in microphone with echo cancellation technology allows for natural-sounding voice calls. Enjoy ultimate sound – completely untethered.