Elapse SI (TWC)

The two polished chronograph pushers enable the wearer to start and stop intervals of elapsed time, which is observed from the registers and central chronograph seconds hand.

A simple push of the upper button starts the chronograph running. Pressing the same button again will pause it so elapsed time can be read. The wearer can then reset the chronograph by pushing the lower button or continue to track intervals of time with start/stop from the upper button.

The elapse captures 60 seconds from the central chronograph seconds. Every revolution moves the register at 12H to capture up-to 30 minutes. Longer durations of elapsed time of up to 12 hours can be read from the register at 6H.

Originally made in the early 1970s, the Valjoux 7750 is an updated automatic version of its hand-wound predecessors, the 7733 line from the sixties (which featured in Pinion’s R1969 limited edition chronograph).

Since then, the Valjoux 7750 movement has been widely utilised by many watch companies and has become known worldwide as a simple, rugged and efficient movement. A cam-shifting action triggers the process of stopping and starting the chronograph, and the sizeable automatic winding rotor can create a characteristic known as the ‘7750 wobble’ when worn.

Several processes are undertaken on the dial to give its multi-contrast finish. First, the chronograph registers are milled at 12H and 6H to create two lower levels. Engine turning is applied to these to create a contrasting effect making them appear darker under differing lighting conditions.

Next, subtle vertical brushing is applied to the base of the dial and circular brushing to the outer rehault ring. These are then electroplated with colour. The brushing helps with the contrasting tone of colour when viewed in different lighting conditions.

Finally, the dials are gently buffed before printing commences. Once complete, a galvanic varnish is applied, sealing the elements and providing a glossy surface to the dial.