The Beltronics STi Driver features a new platform for radar detection. A magnesium housing provides extra durability and shields the STi Driver from detection. Exclusive TotalShield technology makes this top of the line detector invisible to radar detector detector, including VG-2 and Spectre. Beltronics doesn't skimp on the advanced warning systems, either. With two forward-looking antennas, you are well protected against X, K, and Ka-band radar, including "POP" Ka-band instant-on radar. Multiple laser sensors sweep at long range, and you'll be protected against false alarms by the AutoScan feature. You can program the STi Driver's sensitivity for city or highway. For a drive-worry free car trip, get the leading STi radar detector. 9 programmable features 280 LED alphanumeric display voltage meter display 2 city modes and highway mode Operating Bands - X-band - 10.525 GHz +- 25 MHz; K-band - 24.150 GHz +- 100 MHz; Ka-band - 34.700 GHz +- 1300 MHz; Laser - 904nm, 33MHz bandwidth Dimensions - 3 1/16 W x 1 1/4 H x 4 3/4 D ..