[mthomasmw]

'Currently the tech can create one hour's worth of power "from just 20 minutes of English or Swedish summer sunshine".'

[LightG]

So ... 20 minutes use per year.

Nice.

[zdragnar]

Presumably, it is referring to strength of sunlight at that latitude. 3:1 runtime to charge time for strong solar lighting really isn't bad at all if the cells are durable enough for a wearable item and the speakers don't suck.

[OJFord]

I think GP is joking about getting just 6m40s of sunshine per year in England/Sweden.