The Jabra Evolve2 55 Mono MS is a Microsoft certified Bluetooth wireless one-ear headset. It has a noise canceling 4-microphone array, and offers up to 100ft of range with up to 37 hours of talk time. Its 360º busylight acts as a do-not-disturb sign for when you are on a call or need to focus. It can connect using its included USB-A wireless Bluetooth adapter, or using the integrated Bluetooth receiver in the earpiece.