3 Answers

http://www.gomezpeerzone.com/faq/

http://www.exploitn.com/threads/guide-how-to-run-gomez-peer-with-maximum-efficiency.8310/

To ensure the functioning of the two independent chronographs integrated in the one movement, McDonnell had to contend link with the power demand and friction in link the movement. The watch uses patented jewelled vertical clutches to reduce friction and stop the flyback from blocking the return-to-zero, link plus a jeweled roller for improved precision and energy efficiency.

I believe my personal Leman was produced in the early 2000s which would be a later production model but I acquired mine late last year on the secondary market fresh from a link Blancpain service where a silicon balance link spring was added to the movement. I've considered hunting down an OEM Blancpain X71 bracelet to pair with it but I generally prefer leather straps and have been quite happy link with the burgundy Hodinkee Sedona calfskin strap it's pictured on in this story.