The Dark Energy Sentinel is a handheld flashlight with a telescoping body. At 800 lumens it covers the gap between a headlamp and a lantern, and the adjustable length means it pockets on the approach and extends when the beam needs to reach farther down the trail or across a campsite. What Our Gearhead(R) Experts Are Saying:"The telescoping body is the part I actually use. Collapsed it fits in a jacket pocket, and extended it throws enough light to navigate a campsite without hunting for the headlamp."