Plantronics Ultra Light Ultra Light, Go Anywhere Headset for Cordless & Mobile Phones Provides handsfree conveniencedo other tasks while you talk Manufacturers limited one-year warranty In-the-ear style with Flexfit design for comfort and stability. Advanced speaker technology provides superior sound and protects hearing. Features noise-canceling microphone with adjust switch and RF noise shield, plus separate control button for one-handed volume and mute. Clothing clip, flexible cord. Direct connect to most headset-ready cell phones. For Nokia 5100/6100/7100 Series Hardwired Nokia adapter.