Jabra Stealth Bluetooth Headset - Black (US Version) Small, discreet design incorporating microPOWER technology. The battery in your Jabra headset is not replaceable Jabra Assist App helps you locate your headset using GPS tracking Noise Blackout, HD Voice for crystal clear sound at both ends of phone calls, and A2DP for music streaming Easy pairing to smartphones and other devices with NFC, as well as Multiuse to pair to 2 devices at the same time 6 hours of talk time and an energy-saving PowerNap function NOTE: Check instruction videos before use