ERA by Jawbone Bluetooth Headset - Bronze Streak - Retail Packaging (Discontinued by Manufacturer) The smallest, lightest headset Jawbone has ever created at less than 2 inches long and weighing in at just 0.2 oz. Up to 4 hours of talk time; Bluetooth range is up to 33 feet NoiseAssassin 4.0 detects when you are speaking to eliminate background noise Advanced ear fittings feature a new design that uses the natural contour of the ear to create a secure fit ERA's built in locator and Jawbone App ensure you'll never lose it. In order for the unit to work, the Bluetooth name should be displayed and found on the other device as well. If the units do not pair, then the unit is due for a charge.The battery needs to be replaced after a few years.