INO Weather Pro

Our take Lightning in exposed alpine settings is terrifying and dangerous—which is why it was a no-brainer to stash the Weather Pro in our pockets on summer summit missions. The GPS-size device tells you how close lightning strikes are with a proprietary internal antenna system. (It beeps to signal danger.) Other info—including humidity, pressure, and altitude—is displayed on an easy-to-read color screen. Knowing the location of fast-moving storms in the Rockies helped us decide whether to continue or find cover.

Features The Weather Pro’s rechargeable lithium battery lasts up to 30 hours. Updateable software means you won’t need a new unit anytime soon.

Trail cred “The beeps were loud enough to hear even when the device was in my pocket, so I didn’t worry about missing a warning on Colorado’s Castle Peak,” our tester says.