The Ball Fireman Storm Chaser Pro is a collaboration between Ball and meteorologist Dr. Joshua Wurman. With a durable stainless steel case and options of black or grey dial, it also features a tachymeter scale on the bezel and a telemeter scale on the dial's flange. The movement is Valjoux-derived RR1402. The reference CM2092C-L-GY model has a cool grey dial and a perforated calf leather strap.