Aliph Jawbone Noise Shield Bluetooth Headset (Red) (Discontinued by Manufacturer) Advanced, military-grade noise-canceling system continuously adapts adapts to your environment Award-winning modern industrial design by Yves Behar Can be worn on either ear; includes four earloops and five earbuds for custom fit Charges via proprietary USB cable Jawbone's ergonomic design enhances the acoustic performance and keeps the device lightweight, stable and comfortable