The reliability of a product is generally determined by applying accelerated operating cycles, providing optimum reproduction of real conditions of use; the number of cycles is determined based on market information, and the cycle application frequency is adjusted so as to prevent particular wear phenomena:
- Ageing of time-setting functions (pulling & pressing, rotation)
- Ageing of winding functions
- Ageing of push-piece and chronograph functions
- Ageing of corrector functions
- Ageing of automatic system
- Ageing of lubricants by climate and heat cycles
- Rotating bezel rotation cycles
- Rotating bezel sand test
- Ageing of any other movement or case function