A free downloadable Solar App (Windows-only), which you can activate by the touch of a dedicated key, brings up an on-screen lux meter. It shows how much power is left before you’ll need more light, and it tells you what kind of power you’re drawing from the currently available light source. The same “check light” key also has a tiny indicator above it that glows red or green depending on whether a charge is needed.Beyond those wins, the streamlined, one-third-of-an-inch-thick keyboard also happens to be extremely comfortable to type on. The keys are chiclet-style and concave, and you get a resilient key feedback that’s not mushy or too firm. If the minimalist, flat design is ergonomically uncomfortable for you, the two belly-side kickstand legs pop open to add a slope if desired.