Jabra Steel Ruggedized Bluetooth Headset (US Version) - Black 5 year warranty and headset is dust, water and shock resistance Compliant to IP54 rating. HD voice and Dual microphone technology removes background noise to ensure clear calls in any environment. Voice guidance, Siri/Google now button and extra large Buttons for one-touch control, even with gloves on. Wear with or without ear hooks and choose from multiple-sized eargels for a personalized & secure fit. NFC for easy pairing, connect to 2 devices at the same time and up to 6 hours of Talk time. Avoid storage at extreme temperatures (above 70C/158F or below -10C/14F). This can shorten battery life and may affect headset operation