A bayonet fitting clear colour Strobe Light Bulb with adjustable flash rate up to 4 flashes per second as per sample photos - (except that camera flash can change colours & shades etc & make things look brighter & better than they really are) Some people can be very sensitive to strobe flashes etc so only bid or buy if you know about these things and are very cautious about its usage. (photos are sample only as I have a number of these on different auctions, but they look all the same, except for different colours of course) This bulb is said to be clear or white. The bulb has an adjuster on the side to change the flash rate. It has a plastic sort of material casing. It measures approx 110mm odd high, approx 70mm wide. Has info on the box sides. Measurements are given, so please use them to compare to something else you own to give you a better idea of size. There's a number of photos, hopefully enough, to try & give a good indication of state and condition etc, and to help you decide its value & suitability to your use, whatever that may be. So PLEASE, use those photos to help you see & gauge its faults, condition and other things you may want to know. And if not sure, ask a question !!!! We allow pickups, but if you do not want to pickup, then we can send for you, on your behalf, at your risk. Couriers & PO etc do not cover antiques, collectables & heaps of other things so is sent entirely at your risk. Please note the different postage options and choose the right one for your situation. (so if you are rural delivery, choose the Rural delivery option) And sometimes there may be more expensive options, which can be good when combining auctions (if it works) and the smaller option for a single item. Thanks. 417 refN1080060C