This is a budget product, not expensive but it could have been made more durable. The two shafts are only supported at one end. Supporting the shafts at both ends would greatly enhance durability and for hardly any additional cost to produce. The gears are polymer not metal and are likely to have a shorter productive life. The product does work fine so given the low price, I found it good value.
Would be better if the key was the same type as the Lucas Ignition key. I doubt the strength of the lock. It looks like the locking pin is made from casting metal - not sure though.
2X Handheld Digital LCD Chronograph Sports Counter Stopwatch Timer Stop Watch OZ
17 December 2016
A cheap stopwatch that performs
I bought two because I needed one to make an automatic timer for CO2 race cars. This watch can be easily modified - unscrew the back, make the connections to the button terminals, add some external sensor electronics and it worked a treat. See Instructables for the instructions. The other one remained manual and has not missed a beat.