wireless and unbatteried
My fabulous hand-crank radio also includes a solar panel. I’ve never yet had to wind it up because the light in the Wendy House conservatory keeps it going longer than any duracell battery would….
I do occassionally wind it up because, like the gravity-powered exit, the action is very pleasing. Pleasing is more than the ‘satisfactory’ experience required to establish conformance with usability standards.
I tried to complete a ‘System Usability Scale’ (SUS) for my fabulous radio incase I meet and usability people that would like to know, in numbers, exactly how fabulous it is. Unfortunately I was unable to complete the SUS because I don’t know what ‘integrated functionality’ is and am confused by the concept of an ‘inconsistent’ product, so I couldn’t answer questions that included these things. I’ll just tell the usability people its a 7000 on the SUS scale, they’ll get the general idea.