The sub-dials have no function, just for decoration. Calendar display function greatly adds its practicability. Premium faux leather strap will provide comfortable wearing experience.   Type: Wrist Watch Gender: Men's Style: Sports Case Material: Alloy Band Material: Faux Leather Display: Analog Movement: Quartz (Battery) Waterproof: No Occasions: Daily Life, Shopping, Party, Gift, etc Features: Calendar Display, Sub-dials Decor, Comfortable to Wear Band Length: 24.5cm/9.65in (Approx.) Case Diameter: 5cm/1.97in (Approx.) Band Width: 2.4cm/0.94in (Approx.)   Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.   Package Includes: 1 x Wrist Watch