Bought at REI:

Rugged, 3-in-1 tool features a true tactical 3-mode flashlight, a built-in hand warmer and a large-capacity portable power bank for recharging your electronics on the go
Flashlight has 3 modes of white-light illumination for up to 48 hrs. of light on a single charge; internal lithium battery recharges hundreds of times without buying batteries
Flashlight with 3-mode 5W LED bulb casts up to 300 lumens
10,000 mAh rechargeable lithium battery can charge most smartphones 4 times, and will fully charge tablets, sport cameras, GPS devices, MP3 players and other devices as well
Dual out ports allow for charging 2 devices at once
Hand warmer lasts up to 10 hrs, providing continuous heat up to 114°F;
CNC-manufactured housing stands up to heavy outdoor use; IP65-rated to be water-resistant, dustproof and drop-tested tough