Dynamo Charger 1 minute shaking time can last lighting 60 minutes for single LED, 30 minutes for 3 LEDs. Dynamo Charger YSF-J003Features: 1) The strong power locomotive shaking flashlight, great used in outdoors, travel, jaunt, boat, household, sail, bad weather and earthquake, it is the fist selection in emergency.2) This flashlight owns the advantages of no battery,environmentally friendly, ...