In the early 1970’s Memotime introduced its first wristwatch with regatta countdown function under the name Memosail, as a direct competitor to the Aquastar watches. To compete with Aquastar, and to bypass their patent, Memotime had taken a contact with the Swiss manufacturer of mechanical movements Valjoux SA. They developed the caliber Valjoux 7737, derived from the base caliber 7733, with a slightly different approach to countdown the remaining time to the start of a regatta. When at zero the indicator disk shows START in a cut-out section in the dial.
On February 25th, 1972 Valjoux SA filed their patent for a ‘Pièce d’horlogerie à mécanisme de chronographe’.
Read all about the introduction and the patent of the Memosail watches here in the Brands-list.