Furolog
Apple Watch in the bath or at a sento: water resistance, soap, and heat
Apple Watch is water resistant, but that does not make every bath or sento visit risk-free. Learn what Apple says about soap, hot water, Water Lock, and care.
Read →hardware
4 posts
Can you wear an Apple Watch in a sauna? What Apple says, and what actually happens
Apple's sauna guidance is more specific than "don't". Here is the exact rule for each model, what heat really does to the watch, and how sauna regulars wear one anyway.
Read →
Can you wear an Apple Watch in an onsen? Heat, minerals, and what Apple's guidance means for hot springs
Apple Watch is rated for swimming, but a 42°C sulfur spring is not a pool. What the water resistance rating covers, which spring types are hard on the watch, and how to bathe with one sensibly.
Read →
Which Apple Watch models have a water temperature sensor?
Not every Apple Watch can measure the water it is in. Here is which models have the sensor, how it works, and why it matters for logging onsen and sauna sessions.
Read →