ZENITH Chronomaster Open Grand Date [Brand Name] Zenith / ZENITH [Type] El Primero Chronomaster Open Grand Date Power Reserve [Model Number] 03.1260.4039/01.C505 [Target Audience] Men's [Case Width] Approximately 45mm [Size Details] Wrist size: Approximately 15~20.5cm [Materials] SS, Leather [Movement] Automatic Winding [Daily Rate] Average +1 second [Dial Color] Silver [Display Type] Chronograph [Calendar Type] Date Display [Windshield] Sapphire Crystal Thank you for viewing. Purchased from Mercari Shop in February of this year (photos 9 and 10) Overhauled and in beautiful condition. The bluish reflections are from the light. The item can be viewed in person if you are in Tokyo.