Ball Fireman Ionosphere Chronograph

Movement: Automatic calibre ETA 7750.
Functions: Hours, minutes, subsidiary seconds; date and day; Chronograph – accumulated time measurement up to 12 hours;
19 micro gas tubes on hour, minute, second hands and dial for night reading capability.
Case: Stainless steel; Ø43mm, height 14.4mm; anti-reflective convex sapphire crystal; screwed-in crown.
Shock resistance: 5,000Gs. Water resistance to 100m.
Band: Stainless steel with folding buckle or calf leather with pin buckle.

http://www.ballwatch.com/