DESC: PNI's unique and patented technology brings unparalled detection sensitivity in an incredibly low-power package, giving you cordless convenience without sacrificing an ounce of performance. The Cordless Traveller was developed from the ground up to be a superior radar detector. The bi-laminar antenna (patent pending) is constructed of two sheets of copper, which dramatically intensify the incoming signal. Other manufacturers use only one detector made of cast aluminum. Your benefit is an increased signal to noise ratio. That means you'll recognize speed traps sooner.