The actual mechanism remains the same: the H2, co-designed by HYT and Audemars Piguet Renaud & Papi (supervised by Giulio Papi), is a unique timepiece based on a movement that drives two bellows systems. The bellows uses two flexible alloy storage tanks. The form is at the ends of the capillary. One reservoir contains colored liquid and the other is transparent liquid. Choose them to avoid mixing. The separation position between the colored liquid and the transparent liquid is used to indicate the time, from 6 am to 6 pm, after which the colored liquid returns to the starting point in a retrograde arrangement. The H2 Aviator watch is slightly different from the original in 2014, and the bellows are arranged in a V shape.