U-BOAT Classico 45 TUNGSTENO CAS GREEN REF. 9581 - automatic chronograph SW500 caliber

MOVEMENT
mechanical automatic chronograph movement with technical modifications to U-BOAT specifications. Frequency 28,800 vibrations/hour, 4 Hz. Power reserve 62 hours. 25 jewels. Skeletonized rotor. SW 500 Sellita.

FUNCTIONS
hours, minutes, seconds, chronograph function, date, 24-hour indicator, crown cover.

CASE
AISI 316L steel. Polished tungsten bezel. Crown extraction lever at 8:30. 45 mm diameter.

CASE BACK
steel. Closed with 7 screws. U-shaped opening with sapphire crystal movement view.

DIAL
three-level green metal. Indexes and numbers treated with beige superluminova. Metal hands painted with beige superluminova treatment. 24-hour hand in red.

CRYSTAL
sapphire with anti-reflective treatment.

WATER RESISTANCE
100 mt, 10 ATM.

STRAP
lasered leather aged with natural process, black color. Handcrafted in Tuscany by skilled artisans, with a careful selection of leathers and materials, and entirely Italian processing. Waxed cotton stitches. Width: 20/20 mm. Strap: ref. 9690/Z. Steel tongue buckle. Buckle: ref. 4879.