Enjoy a long-lasting portable audio experience with the silver Everest 310 Wireless Headphones from JBL. These headphones  feature dual 40mm drivers, which help deliver JBL's signature sound quality. The 310 connects to your mobile device using Bluetooth 4.1, enabling you to stream audio wirelessly. You can also enjoy a wired audio experience with the included detachable audio cable. In addition to music playback, the 310 features an integrated, echo-canceling microphone that allows you to make and receive hands-free calls.