Seagull 1963 Archimedes Spiral and Pulsemeter Edition
Self-winding mechanical movement beating at 21600 vibrations per hour, with a power reserve up to timed 37 hours/untimed 45 hours.
Seagull 1963 Archimedes Spiral: Precision in Heritage
This Seagull 1963 Archimedes Spiral and Pulsemeter Edition adopts the ST1901 movement, inheriting the lineage of the Seagull 1963 Original Edition. It showcases a classic appearance with a polished 316L stainless steel case that exudes timeless charm. The Archimedean spiral in the center of the dial is a type of equiangular spiral, utilized for calibrating and measuring average speed.
The transparent caseback fully reveals the mechanical beauty of the ST1901 movement and the engraved words on it-- “天津手表厂” (Tianjin Watch Factory) and “中国空军” (Chinese Air Force), making it a timeless masterpiece. The watch comes equipped with a pulsemeter scale, allowing wearers to measure their heart rate with precision. This feature is particularly useful for individuals interested in monitoring their cardiovascular health during various activities.
Case & Crystal
Material：316L Stainless Steel
Dimension：Ø 40 mm
Crystal: Domed Scratch-Resistant Sapphire Crystal
Water Resistance: 30 metres
Dial & Strap
Dial Color: White
Strap Color: Black
Material: Cow Leather
Buckle Type: Pin Buckle
Hours, minutes, small seconds at 9 o'clock
Flyback Chronograph Mechanism: central 60 seconds hand and 30 minutes counter at 3 o'clock.
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