Hydrasentinel
Hydrasentinel is a smart band designed to improve safety during water activities such as swimming and hot spring bathing. The circular screen flashes rapidly when danger is detected. The strap uses thermal induction to give a warming alert, and a speaker sounds a loud alarm if body temperature drops too low. An internal vibration module adds a further warning. The band is made of titanium alloy, glass and ceramics, with a silicone rubber strap and a temperature sensitive coating that changes color in different water temperatures.
Hydrasentinel Smart Band by MA RUI has been featured as an innovative illustration of product design by the A' Design Awards. Hydrasentinel Smart Band earned the Bronze A' Design Award in Wearable Technologies Design in 2025. The A' Wearable Technologies Design Award is an international, meritocratic, just and fair design accolade that celebrates excellent design of smartwatches, fitness trackers, VR headsets, AR glasses, medical devices, smart jewelry, body cameras, wearable computers and more.
