It's an IP67 rating, which means it'll be waterproof to a degree. Personally I wouldn't go swimming with it or taking a shower with it on. Pressure from moving your arm through the water or from the shower head could easily exceed the pressure you get at 1m depth (which is the limit for IP67)...
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
It's an IP67 rating, which means it'll be waterproof to a degree. Personally I wouldn't go swimming with it or taking a shower with it on. Pressure from moving your arm through the water or from the shower head could easily exceed the pressure you get at 1m depth (which is the limit for IP67)...