Original: Other than the movement and its discs, every part of the watch is uniquely designed. Simple: No unnecessary decoration. Small: 37 mm x 42 mm x 11mm. Perfect for people who have a wrist size of 15 cm to 18.5 cm. Watch body weight 59.6 g (2.1 oz), straps 8.8 g (0.31 oz). Unisex: But maybe not for people with the big wrist. Ergonomic Design: The crown will never poke the back of your hand. Unique 2-Piece Case Design: Partially inspired by Étienne-Louis Boullée's architecture Cénotaphe à Newton (1784). (Black color ion plated) Time & Day-Date (EN/JP): All the necessary information in the stay-at-home era. Hands and hourly indexes lumed with SuperLuminova C1. Seiko Instruments (SII) NH36A: One of the most trusted robust Japanese automatic movement available. 5 BAR Water Resistant: Enough to get through daily wet, sweat, and tears. Just don't dive with it. Sapphire Crystal: Scratch-resistant sapphire crystal is used for the top crystal to prevent scratches. Case back crystal is a mineral crystal. Limited Editions: Each color variant is limited to 100, each engraved with the serial number, so you can be proud of having a rare watch.