Ailang Multi Function Automatic Mechanical Watch Men''s WatchProduct information: Brand: Ailang Special functions: luminous, tourbillon, calendar, small three hands, 24 hour indication, perspective window, moon phase display, week display: display type pointer Applicable crowd: male style: Casual Waterproof: Yes Waterproof performance: 30M Movement type: mechanical Dial diameter: 41mm Thickness: 14mm Crown type: onion crown Table bottom type: through the bottom Mirror material: mineral strengthened glass mirror