The calibre 5100 is used in chronographs from Omega (in the past), Sinn, Fortis, Tutima, Alain Silberstein, Paul Picot, Orfina Porsche Design (in the past), Tissot (in the past). Sinn offers the 5100 (for an additional fee) with a COSC certificate.
Characteristic traits of the Lemania 5100: the central minute-counter, 24h indicator and 12-hour counter sub-dial.
Production started 1978, production ceased in 2003/2004. A 13,75 lignes movement. 31mm in diameter, 8,25mm in height. 17 jewels, 28800A/h, and a power reserve of 48 hours.