The Sinn 203 Arktis is a legendary tool chronograph produced by Sinn, featuring extreme engineering and purpose-built design. It boasts Sinn's Arktis oil technology for cold environments, rugged construction, captive diver's bezel, and a proven 7750-based chronograph movement.

• Condition: Very good overall with normal signs of careful wear
• Case size: 41mm
• Movement type: Automatic chronograph (Valjoux 7750 base)
• Water resistance: 300m