Do you prefer rechargeable or one-time use batteries when hiking?Forget, for the moment, that the flashlight on the left has two brightness modes, and 3 colors with blinking options, is very light and can clip on the floppiest of brims/lids. Made out of plastic and can/will glow in the dark.The flashlight on the right uses a AAA battery, probably lasts longer, is made from aluminum, and is probably waterproof and has 2 levels of brightness. And replacing the battery is instantaneous.