I've used the Kisan tailBlazer on a couple of motorcycles I've previously owned and really like the simplicity and effectiveness of it. In the past, I've noticed an immediate difference in how quickly cars behind me began to slow when I put on the brake and how much distance they left behind me at a stop. I'm definitely sold on the idea of a modulating brake light, whether from this company or another. I like the Kisan because I don't need to wire it in to the bike's electrical system. You simply replace the stock bulb with the tailBlazer unit and you're done.
I purchased mine on eBay for $62.95 with free shipping on Friday, June 5th and received it today. Not bad at all. Installation took just a couple minutes. Here's a short video showing it in action. Unlike some other modulating taillights, once it completes its cycle, it remains steady on unless and until you release and reapply the brake. I've never found that to be a big concern.
https://youtu.be/RfygvMZsHnQ
Our CB1100 is not listed on the Kisan fitment guide but looking at the bikes that are on there and examining the OEM bulb, I took a gamble and ordered model # 20W-D and it works perfectly.
Here's my attempt at embedding the video...
Ahhh...sweet success.