The clock is slightly less than is suggested by the picture, but for my needs (bathroom) perfectly adequate.
The display is large enough and thankfully quite stable viewing angle. Is operated the clock with a button cell that is aktivert by pulling a plastic tongue. The operation is self-explanatory.
As the useful property clock know implemented on two permanent magnets on the back with which the clock can be attached to metal surfaces. A metal plate with adhesive surface is also included.
Conclusion: For the price we paid a good price / performance ratio!