The Maurice Lacroix Miros Diver Chronograph is a thermo-compensated (TC) quartz watch.
It has four main hands and three sub-dials. The main hands are for hours and minutes, and for chronograph minutes and seconds. The subdial at 10:00 is for chronograph hours, the one at 2:00 is for chronograph 1/10 ths seconds, and the one at 6:00 is for watch seconds.
The 1/10 ths second hand only moves upon pressing “stop” (pusher at 2:00, also used for starting the chronograph) or taking “split times” (pusher at 4:00, also used for resetting a stopped chronograph). When the chronograph is running it sits at the zero position.
The case is brushed stainless steel and comes in four dial/bezel colours, white, black, brown and blue. The crown and pushers are screwdown to enhance water resistance of this 300 metre dive watch.
This model has been discontinued but several new ones have been available on-line through several vendors.