The Trainmaster Doctor's Chronograph is a limited edition timepiece – only 199 such watches have been produced. Each Trainmaster Doctor's Chronograph is made of yellow or rose gold and 99 pieces come with platinum casing. It is equipped with Ball's 350 automatic movement, which is based on ETA 7750. The movement performs 28 800 vibrations per hour and has 25 bearing jewels. A 46-hour power reserve is available for the convenience of the wearer. The watch is protected from shock and water penetration. Hands and markers are illuminated through the use of 15 self-powered micro gas tubes that glow 100 times brighter than luminous paint. The watch has a single-button chronograph that produces accumulated measurements of up to 12 hours. Other useful features include a pulsemeter graduated for 15 pulsations, a triple month-day-date display, see-through case back, screwed-in crown and scratch-resistant sapphire crystal glass with anti-reflective coating.