Absolutely not. 1. The dynamo would take up too much room 2. Pinching a tiny metal shaft is ergonomically awful 3. have you seen the tiny wind-up flashli

Absolutely not. 1. The dynamo would take up too much room 2. Pinching a tiny metal shaft is ergonomically awful 3. have you seen the tiny wind-up flashlights? they're huge, and they require quite a lot of winding, and that's just to power an LED for a few minutes. 4. groundbreaking features like a wind-up piece of personal electronics, are *flagship* features. If this thing had a 1 week battery, or was windup, or whatever, that would be a *very high visibility* part of the ad campaign.