It looks a bit weird to wear a complete see-through watch. More or less. But with this Hublot Spirit of Big Bang Sapphire you can
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movement Hublot HUB4700
Movement Hublot HUB4700 | Automatic | Frequency: 36,000 vph (5 Hz) | Jewels: 31 | Parts: 278 | Hours, minutes, seconds, date, chronograph | Power-reserve: 50 hours