The Development of the Derek Pratt Wristwatch
The Derek Pratt Wristwatch incorporates many of Derek's innovations.
Hour, minute and seconds hands, with the seconds hands beating seconds.
Free sprung balance with overcoil hairspring.
Derek's development of remontoire escapement.
Twin free-standing mainspring barrels.
Engine turned silver dial.
18k white gold case
Derek Pratt's Remontoire
Among his many innovations, his remontoire is surely his most notable
Powered by twin free standing barrels, the remontoire delivers
absolutely constant power to balance, rather than very strong when fully wound and weaker as the mainspring
winds down. This insures greater timekeeping accuracy.
Secondly the remontoire results in dead seconds indication of the second hand
Derek Pratt Wristwatch
While Derek never made the wristwatch, he closely followed and advised during
the development of the watch that bore his name.
Engine Turned Dials
It will come as a surprise to many that Derek was the first to re-introduce engine turned dials to modern watches.
It was subsequently adopted by other Swiss, German and English watch brands.
There are excellent links below outlining Derek's life and his unique contribution to watchmaking.