ERA by Jawbone Bluetooth Headset with Charge Case - Black Streak (Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com. The smallest, lightest headset Jawbone has ever created at less than 2 inches long and weighing in at just 0.2 oz. 4 hours of talk time, or up to 10 hours with charging case 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