why need rear detection? cops can get you by pacing; clocked. but if you want rear protection than spend a 1000 bucks on ESCORT SR7 or BEL 975R/RX75...

the cops "radar" gun is not as serious as "lasers". when cops use "radars", the gun calculates rapidly so the display flashs your estimate speed constantly intill the cop stops the gun <--- you can get away easily because by the time the cop stops the gun from calculating, your mashing the breaks (assuming you do have a radar detector; a good one) and next thing you know he catchs your speed goin the speed limit.. so cops have no proof, i mean proof that your goin to speed limit

LASER guns on the other hand is INSTANT. they got your speed right away and once your radar detector detects a laser, the cop is ready to pull your azz over.

your better off getting a radar detector with really good LASER range; so you can detect cops using lasers from miles away before they can detect you. especially if your goinn out of town, all cops on the interstate highways got LASERS, only......