Cobra 14 Band Radar Laser Detector w/ Tone & Voice Alert (Certified Refurbished) Xtreme Range Superheterodyne Technology - with super fast sweep circuitry, XRS provides extra detection range and the best possible advance warning to even the fastest radar guns Detection and Separate Alerts: for radar signals (X,K,Ka &amp; Ku bands), laser signals, safety alert signals, strobe alert signals, VG-2 signals, Spectre I &amp; IV+ signals LaserEye: Provides 360-degree detection of laser signals Instant-On Ready - detects radat guns with "instant-on" (very fast) speed monitoring capabilities Pop Detection - detects the latest super-fast instant-on single pulse radar guns