側聞有新產品感應雷射槍

This thing is not that expensive in US, I got mind in US for $89 US, and this is my third one, I've been using laser dector since 1998...i think the price in hk are just too inflated...in US it's common to have one, especially I do almost 1000 miles of driving a week (traveling from apartment to school, then weekend drive back to my house 3 hrs away)