Optimum Sailing Watch, Series 3

Now more more durable in water resistency, an increase from 3 ATM to 5 ATM.

The button 'pin spindle' mechanism has been improved .
The back casing of the watch is now affixed by 6 screws (previously only 4),
all of which are now housed in metal lined screw threads to prevent
stripping on/after battery change.
Finally, the unit has undergone a modern face-lift!
Now offers a large Start/Stop button at the top of the watch with four
smaller programming buttons grouped at the bottom of the unit.
There is also a curvature to the actual LCD display window, all adding to
make it more acceptable in the modern market place!