Since the spare belt parts are missing, this is for someone whose size fits. The inner diameter is about 17 cm. It was actually worn a few times, and there are no noticeable flaws, so I think the condition is good. Please refrain from purchasing if you are concerned about minor details. GW-A1100FC-1AJF GRAVITYMASTER SKY COCKPIT Tough Solar Radio Wave Reception Radio Solar Multi Band 6 Black Red Analog Model Direction Measurement Function Equipped TRIPLE G RESIST (Shock Resistant Structure, Centrifugal Force Resistant Performance, Vibration Resistant Structure) Shock Resistant Structure (Shock Resist) Flight Composite Band Metal Band - Confirmed operation of Tough Solar charging and automatic radio wave reception. Wrist size: Approximately 17.0 cm ■ Specifications and Functions ● Shock Resistant Structure (Shock Resist) ● Non-reflective coating sapphire glass ● Neobrite ● Triple G Resist (Shock Resistant, Centrifugal Force Resistant, Vibration Resistant Performance) ● 20 ATM water resistance ● Case/Bezel Material: Resin ● Resin band (Flight Composite Band) ● Tough Solar (Solar charging system) ● Radio wave reception function: Automatic reception (up to 6 times/day/manual reception) ● Hand position automatic correction function ● Direction measurement function: Continuous direction measurement (20 seconds), North direction pointer function, direction correction function Non-reflective coating sapphire glass is used for the windshield for easy viewing. ■ Accessories: Box Thank you.