He placed a kiss lovingly on her brow as she slept before quietly leaving the apartment. As he looked at his Hanhart watch in the hangar, a smile flitted over his lips: she had painted the button with her red nail varnish so that he would think of her always and return safe and sound …This is the legend behind the red button – the distinctive trademark that has characterized Hanhart since the company first introduced its chronographs in 1938. The button has been painted, in particular to prevent pilots from unintentionally zeroing the stop time.