
Hydrium
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Isotope Watches Hydrium (NASA; Trippy; Racing Green Orange; other Hydrium variants) is a watch listed at GBP 1490. Exterior details include water resistance: Varies by caseback/model; Isotope instructions note up to 300/200/100m depending on watch. It is powered by Automatic; Hydrium family uses NH35/Sellita/LJP depending on generation/variant.
Hydrium sits in Isotope Watches's catalog as a sports-leaning independent watch worth comparing on the details: imagery, movement, case sizing, water resistance, and the official brand listing rather than headline price alone.