I believe the Seque Tours are through Fat's Bike Tours: http://www.fattirebiketoursparis.com/

I took the Versailles Bike tour as well as Giverny and thoroughly enjoyed both. I went to Fat's several times to use the internet and there were always people practicing using the seque. The two guides I had were young American university students and very knowledgeable. I'll definately take the City bike tour next time.

Marlene Johnson New Westminster BC