Optimised for unified communication, this Jabra Evolve2 85 headset features powerful leak?tolerant 40mm speakers for crystal clear calls. It has 10 built-in microphones to keep your calls seamless and professional. With an industry leading 37 hour battery life and comfortable memory foam ear cushions, you can wear this headset for long periods of time without disturbance. Supplied with a Jabra Link 380 Bluetooth adapter, you can connect your headset to your computer and your smartphone or tablet at the same time.