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APEX ST
As Sharp as Your Racing Line
The APEX is a 42mm Swiss Made chronograph with a tachymeter bezel,...
As Sharp as Your Racing Line
The APEX is a 42mm Swiss Made chronograph with a tachymeter bezel, sapphire crystal, and 100 metres of water resistance. It houses a Swiss-made Ronda 3540.D quartz movement with 1/10th-of-a-second chronograph precision.
Movement
The Ronda 3540.D is a Swiss-made quartz calibre with a 1/10th-of-a-second chronograph function. Three subdials display chronograph hours at 12 o'clock, minutes at 9 o'clock, and running seconds at 6 o'clock. The anodised aluminium tachymeter bezel allows speed-over-distance calculation, a function widely used in professional motorsport timing.
Dial
The APEX dial features a waffle texture with cut-through numerals and applied hour markers. All markers and the baton-shaped hands carry Swiss Super-LumiNova for low-light legibility. A date window is positioned at 6 o'clock. The dial sits beneath a scratch-resistant sapphire crystal with multi-layer anti-reflective coating.
Case
The case is 316L stainless steel, measuring 42mm in diameter and 12mm in thickness, with a 51mm lug-to-lug span. It combines brushed, polished, and chamfered finishing. A screw-in crown and screw-in chronograph pushers at 2 and 4 o'clock secure the 100m water resistance rating.
Strap Included
Integrated Silicone Strap: Tapered design with signature tricolour racing stripes. Fitted with quick-release pins for tool-free strap changes. Width: 25mm at the lugs. Weight on strap: 110g.
Specifications
| Case Diameter | 42 mm |
| Thickness | 12 mm |
| Lug-to-Lug | 51 mm |
| Case Material | 316L Stainless Steel, brushed / polished / chamfered |
| Crystal | Sapphire, multi-layer AR coating |
| Movement | Swiss Made Ronda 3540.D Quartz, 1/10s chronograph |
| Water Resistance | 100 m / 10 ATM |
| Bezel | Anodised aluminium tachymeter |
| Lume | Super-LumiNova on hands and hour markers |
| Weight | 110 g on strap |
| Strap Width | 25 mm at the lugs |
What Ships With It
BOMBERG watch box, travel watch case, travel pouch, a 2-year international warranty card, and the integrated silicone strap with quick-release pins.
BOMBERG and the 2026 Michelin 24h Series
BOMBERG serves as the Official Timing Partner of the 2026 Michelin 24h Series, one of the world's leading endurance racing championships spanning circuits across Europe and the Middle East.
Swiss Made.