I have for sale a pair (2) of red LED emergency flashing strobes. These are like the kind you'd find in your rearview mirror when you've been doing 30mph over for a while on I-75. These are made by Whelen (whelen.com). They are the model D2RR 2-Light Dominator Series Super-LED flashers. They are designed to be used with a 12V car/truck system, but you can power them with a little 9V battery to test them. Here is an assembly manual: http://www.whelen.com/install/138/13897.pdf This manual has the basic specifications for the unit. These are built into thick aluminum weather-resistant housings. Here is a picture and retail price: Whelen Dominator LED Lighthead - D2 from SWPS.com . Note mine are all red, not blue/red like the picture. Each D2RR unit has two sets of three super-bright LED strobe flashers, total of six per unit. These ARE bright, they will blind you if you look into them. The two units are like new. They've never been installed in a car. They have the mounting bolts and wiring harness still attached (no Molex tho). They were once used as a gag gift, mounted on an older person's walker, powered by a 9V battery, to "get people out of my way". A low-mileage walker at that! Anyway, funny story aside, I'd like to get $220- for the pair. If you only want one, I'd sell just one for $120-. Please PM me. Thanx!