Ref. 421.JL.4890.RT
The Hublot Big Bang Unico Water Blue Sapphire, reference 421.JL.4890.RT, has a 44 mm polished water blue sapphire crystal case. The polished transparent skeleton dial includes a date display. Calibre HUB1280 is a self-winding movement with a 72-hour power reserve. The chronograph has a flyback function. The movement's column wheel is on the dial side. The case is water resistant to 50 metres. A transparent water blue lined rubber strap closes with a titanium deployant buckle.
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TECHNICAL SPECIFICATIONS
CASE
Diameter
44mm
Case Material
Sapphire Crystal
Water Resistance
50m
Crystal
Sapphire Crystal
Bezel Material
Ceramic
MOVEMENT
Movement Type
Automatic
Caliber
HUB1280
Power Reserve
72h
Frequency
28,800 vph (4 Hz)
DIAL
Dial Color
Skeletonized
BRACELET/STRAP
Bracelet/Strap
Rubber
Clasp Type
Fold Clasp
Clasp Material
Titanium
FEATURES & COMPLICATIONS
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FOR WATCH DEALERS
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