A wristwatch placed inside your fist, across your middle knuckles, can quickly become a knuckle buster that can be used for self-protection to break glass when you need to escape. In addition, simply displaying the time is a useful feature that comes into play if you’re lost in nature. Having a sense of how much time is left till the sunset, when to build or find night shelter, or for how long you’ve been in the water — when stuck out in nature — can be a game-changer.