Understand why rules exist, so you know when to break them.
Fitbit advises the Surge is unsafe to wear in the shower, yet I do this daily. You see, this rule exists for legal reasons, since the company was recently sued after the previous model gave users rashes when it was damp. The unit is actually rated 5 ATM (the technical term for ‘can easy withstand a nice, splashy shower’).
Look deeper, beyond face value, and make up your own mind.