Bremont Watch BC S1. The design of BC S1 is inspired by traditional military aircraft instruments. The watch is equipped with BE 36AE, a modification of ETA 2836 calibre that performs 28 800 vibrations per hour and has 25 bearing jewels. A 38 hour power reserve is available for the convenience of the wearer. Other characteristics include glucydur balance, Anachron balance spring and Nivaflex 1 mainspring. The movement is tested by COSC. A day and date display is positioned at the 6 o clock mark. Additional useful features include Bremont Trip Trick stainless steel case construction, luminous dial elements, see through case back and scratch resistant sapphire crystal glass with anti reflective coating.