100-02-25-12-05Ref

The Glashütte Original Senator Perpetual Calendar integrates a sophisticated movement with a calm, understated design. The caliber 100-02 powers the perpetual calendar displays, which appear through dial apertures including the signature 'big date' and a subtle leap year indicator beneath the logo at 12 o'clock. Reference 100-02-25-12-01 includes an alligator strap and pin buckle, 100-02-25-12-05 an alligator strap and folding clasp, and 100-02-25-12-50 an alligator strap and short folding clasp.