The latest and greatest in headlamps: https://www.rei.com/product/107938/petzl-reactik-headlamp

Now you, too, can make technology work for you - you can now use your smart phone or tablet to save the excruciating effort of, you know, bending your elbow and touching your forehead to change the beam on your headlamp.

Assuming you can get a signal, I suppose?

smile