Aquastar Dive Watch Dive Thermometer

A rare piece of mid-century dive history, the Aquastar Dive Watch Thermometer was designed as a practical tool for serious divers. Built to measure water temperature during dives—a critical factor for safety and planning—it attaches seamlessly to a watch strap, complementing classic dive watches. These thermometers were produced in both Fahrenheit and Celsius, with Celsius versions being exceptionally scarce among collectors. Crafted from durable steel with a compact form factor, this accessory reflects Aquastar’s pioneering role in creating multifunctional dive instruments during the golden age of underwater exploration. Today, it stands as a collectible artifact that blends functionality with horological heritage.

Specifications & Design Details
The thermometer features a clear, easy-to-read dial base in black with white numerals and markers denoting temperature in Fahrenheit, ranging from 0°F to 120°F, with a bright yellow hand which stands out nicely from the black dial — ideal for monitoring typical dive conditions. The dive crystal also is signed Aquastar and its Swiss maker mark. Its robust stainless-steel housing ensures durability under pressure, while the integrated strap slots allow secure attachment to most dive watch bands 20mm and smaller. The compact size and lightweight build make it unobtrusive yet indispensable for divers who value precision and reliability. This thoughtful engineering underscores Aquastar’s commitment to practical innovation for underwater adventurers.