What Our Gearhead(R) Experts Are Saying:"I take the Actik Core everywhere-early morning runs, ski tours, or just late-night dog walks. The brightness is incredible for the size, and I love not having to constantly swap batteries thanks to the rechargeable CORE system."Whether we're logging miles in the dark or setting up basecamp under a starlit sky, the Petzl Actik Core Headlamp shines with reliable brightness and comfort. At just 88 grams, it delivers a powerful 625 lumens of white light through a hybrid beam that's wide enough for trail work and focused enough for distance vision. The Actik Core keeps us moving with three white lighting levels, a red light mode for preserving night vision, and an emergency strobe. With a quick tilt and a single-button interface, it's easy to adjust even with gloves on. We appreciate the built-in battery indicator and the convenience of USB recharging. Plus, the included CORE battery replaces up to 900 disposables-helping us tread a little lighter in the outdoors.