The Harry Winston Ocean Dual Time Retrograde Only Watch is a unique timepiece created for the Only Watch 2015 charity auction. Anodized with Harry Winston’s signature blue color, the inspiration behind its openworked dial is the Shuriken four-point star. Exuding high-performance style, retrograding 3D hour hands indicate a traveler's local time, while the home-time hands reinterpret the Shuriken star. The HW3502 automatic movement is comprised of 281 parts, 32 jewels, with silicon balance spring and a skeleton oscillating weight made out of 18k white gold. Housed in an impressive 18 karat white gold case measuring 44.2 mm, the caseback is engraved "Only Watch 2015 Unique Piece" to highlight its rarity. It along with 42 other unique timepieces will be sold on 7 November 2015 in Geneva to help raise funds towards research on Duchenne Muscular Dystrophy.