BLOCK UNWANTED BACKGROUND NOISE: Jabra Elite 85h Wireless Headphones are engineered for the best wireless calls and music experience with SmartSound; Smart Active Noise cancellation responds to the environment, switching on if it detects background noise SMARTSOUND AUDIO: The revolutionary SmartSound Audio technology in these Bluetooth headphones analyze your sound environment and automatically applies your personalized audio to give you the sound you need, when you need it LONG BATTERY LIFE HEADPHONES: Up to 36 hours of battery on a single charge (with ANC switched on), and fast charging of 5 battery hours in 15 minutes; Listen from the start of the day to the end with these noise canceling headphones UNMATCHED CALL QUALITY: The advanced technology uses 6 of the 8 built in microphones to enhance call quality and block out background and wind noise; This enables crystal clear sound, so you can make and receive calls in total confidence WATER RESISTANT: No matter the elements, you’re prepared to go anywhere with certified water and rain resistant headphone technology and nano coating of the internal components; Plus, there are no pesky wires in these Bluetooth wireless headphones WATER RESISTANT, No matter the elements, you re prepared to go anywhere with certified water and rain resistant headphone technology and nano coating of the internal components, Plus, there are no pesky wires in these Bluetooth wireless headphones