My mom (79 yo) and my M-I-L (89 yo) both have a Convoy BD06. My mom charges hers all by herself, but somebody takes care of charging my MIL’s for her. They both find the switch easy to use, and the size and texture appealing. But they’re both 3-mode with mode memory. I don’t even think they know that, though. They just click it off and on. Maybe Simon could ship it with one mode, since there are options available from his store.

And it looks like he doesn’t sell the BD06 any more, but a BD01 would work just as well.