- 3.5 mm jack
Enjoy amazing sound for calls and music with the Jabra Evolve 40 Headset. It features intuitive controls that let you easily adjust the volume and answer calls. This black wired headset features a cable length of 4 ft. for convenient usage. Its 3.5 mm jack allows you to easily transfer your Skype calls to your smartphone. Lightweight at 6.3 oz., it can be carried around with ease.