... , durable.4) Outer Plastic: first-class ABS, strong, waterproof, anti-weathering, smooth feeling.5) Charging Plug: stainless steel ... the first time.2) To charge it, please push the plug-pins completely out and plug them ... charge needs about 15 hours charging time.3) Push the switch to be 1st gear, partial LED will be ... on, push the switch to be 2nd gear, all LED will be ...