Ingersoll/Rand The Challenger I12307 Black Skeleton Dial Automatic Watch 44.6mm 13.60mm 50m

The Challenger I12307 Automatic Watch

The Ingersoll I12307 is a men's wristwatch with a 44.6 mm stainless steel tonneau case and automatic movement. A black skeleton dial reveals the mechanism behind a mineral crystal. The polyurethane strap secures with a buckle clasp. It offers 50m water resistance for daily wear.

Suits buyers wanting visible mechanics.

This watch suits buyers who want an analog display with a see-through skeleton dial that shows the automatic movement in motion. The fixed bezel and tonneau shape give a distinctive casual style. It is not for users who need higher water resistance for swimming or diving beyond 50m. Buyers requiring a metal bracelet or a different case diameter should look elsewhere.

44.6 mm case diameter defines wrist presence

The single specification that decides fit is the 44.6 mm case diameter combined with a 13.60 mm thickness. This size determines how the tonneau-shaped case sits on the wrist and whether the skeleton dial remains legible. The 50m water resistance rating sets the limit for water exposure. No other dimension in the data alters the wearing experience as directly.