234.021 A. Lange & Sohne. This Yellow Gold has Fixed gold bezel. Silver dial with blue-tone hands and black Arabic hour markers. There are two sub-dials: Power Reserve indicator is located between the 7 and 9 o'clock position and Small seconds sub-dial is located between the 3 and 5 o'clock position. Both sides of the of this watch have scratch resistance sapphire crystal. Brown leather strap with Tang clasp. Manual Movement with 72 hours of power reserve, Analog display. Water resistant at 30 meters / 100 feet. The Watch comes with 39 mm gold case. 234.021 A. Lange & Sohne 18K Yellow Gold Watch.