Charging time 3-5 hours, top light goes off when battery fully charge Food grade silicone tube, odor-free, non-toxic, healthy and eco-friendly, use with absolute trust.Portable device for both indoor and outdoor use like camping, picnic, activities, etc.Suitable for a variety of models barrel.Best replacement for your home-use top load dispenser, it is lightweight, compact, easy-to operate.Steps to install1. Take out whole water Dispenser & parts from box2. Connect provided silicon pipe on water dispenser inlet port 3. Then fixed it on top of water bottle4. Fixed outlet stainless steel pipe on water dispenser5.Check and press on/off well working FeaturesOne Button To Water : Just one button, immediately water, convenient and quick.USB Charging : Using USB, long battery life.Free Moving : Miniature and stylish design, can be carried anywhere at any time, light and easy.It is energy saving.