Rock Doc

Years ago I purchased a headlamp , a small flashlight that straps around your head to light your way. It’s really useful because it leaves both your hands free as you work or walk. I used my headlamp during the dark half of the year to exercise my dog in dark pastures and an undeveloped No Man’s Land on a steep hill near my house.

My headlamp used an old fashioned light bulb and a fairly heavy battery to run it. I used it for years but it finally stopped working, so I recently purchased a new headlamp. Technology has changed, and for the better . The new light uses a light emitting diode, or L...