If you are in a car with the ignition off, sleepeing in car or in night simply you can't see the small time numbers on the display, you will probably buy a separate watch. And those need to be attached.
However, sticking the watch means always peeling off the adhesive tape when changing the battery. But you stick our holder once and for all with double-sided adhesive tape. Then you just gently insert / remove the watch.
The watch is available in commercial e-shops. The diameter of the hole for the watch is 38 mm, depth 6.5 mm.
Alternatively, the diameter of the holder can be 37 mm, please specify in the order.
The watch is not included in the package.
