How does the retrograde display work

DISPLAY ILLUMINATION: Electro-luminescent: The digital display lights up the at the touch of a button

Black Layered Dial with Luminous Skull - Luminous Hour and Minute Hands - Grey Seconds Hand - White Arabic Numeral Indexes - Date at 6 O'Clock - Skull and Flames Shaped Decorative Pattern on the Side of the Case

• A perfect blend of vintage inspiration and contemporary craftsmanship

Powered by a Swiss-made quartz movement with EOL battery indicator

Versace Men's Watch V-Chrono Black Temple Colour_Gold How does the retrograde displayMovement: Swiss Made Quartz Movement. Case: 44mm x 9mm Brushed Black Plated 316L Stainless Steel Case Solid Stainless Steel Caseback with Versace Engraving Anti Reflective Sapphire Crystal Glass Push Pull Crown. Dial: Black Dial with Medusa Head at 12 O'Clock Rose Gold Plated 316L Stainless Steel Luminous Hour, and Minute Hand Rose Gold Plated Seconds Hand Luminous Rose Gold Plated 316L Stainless Steel Baton Hour Indexes Date at 4 O'Clock 3 Sub Dials.