Zipy Sun Light FM Manuel D'instructions page 31

Charging internal Re-chargeable battery
Methods:
-Dynamo
-Solar Panel
-USB
Pull out
Connect to computer
USB cable(included)
When the internal re-chargable battery is being charged,
the LED indicator will turn to red. When the internal re-chargable battery
is fully charged, the LED indicator will turn to green.
Fully charged the battery by sun light, around 15 hours.
Fully charged the battery by Dynamo, around 5 hours.
Fully charged the battery via USB, around 4 hours.
Crank the handle
anticlockwise
Always Rotate
Steadily to
Generate Power