Features that come built in: a compass, an altimeter, a barometer and thermometer, a chronograph with an alarm clock, bottle-opener;a speaker fed by either the built-in multiband radio (AM, FM, shortwave) or an audio line input, and an LED flashlight. It’s all powered by a 1800-mAh lithium ion battery that recharges using the built-in solar panel, and you can transfer that charge to a phone or any other gadget that accepts a USB cable.