Please Read The Instructions Carefully Before Use and Pay Attention to The Following Points: 1.This product is not suitable for fast charging chargers,please choose a power supply within 5V2A. 2.Please charge this product for about 5 hours before using it for the first time. 3.Please do NOT dip the product into water for cleaning. Why Do We Put 2 Adapters In The Package？ When there is no adapter, the bottle mouth of many water jugs cannot use the water pump, so with these two adapters,basically all water jugs on the market can use our water pump to pump water. Why Do We Put 2 Hoses In The Package？ Some water jugs are not high in height,and the hoses will fold and bend after being extended,and then the pump will not be able to pump water.Therefore,we have put 2 hoses so that when the water tank is not high enough,you can choose one of them. Cut the roots arbitrarily,and there will be no problem of getting no water. Why Choose This Automatic Water Jug Pump? Wide Range Of Application Stylish looking,portable,easy to use and very convenience for indoor and outdoor,best choice for the office,home,Kitchen,camping,picnic,activities,etc. Suitable for Different Types of GAL Bottle We add 2 conversion device accessories to suitable for different types of bottles,So this drinking water pump can be used for gallon barrels with 1.51-1.59inch(4cm),1.81-1.90inch(4.8cm) and 2.16-inch (5.5cm) neck. Easy to Use Simply fasten the small pump on the bottle mouth.One switch protection System,Press LED button and the pumping time is 60 seconds,it will stop automatically.Don't need to worry about forgetting to turn off water pump,totally hassle free even for kids and elders. How To Use 1.Install The Pipe 2.Install The Silicone Rubber Tubing 3.Set On The Barrel 4.Press The Button To Get Water WIDE RANGE OF APPLICATIONS: Specification: - Operating Voltage: DC 3.7V - Color: White + Black - Pipe Length: 4.7inch - Hose Length: 21.7inch - Dimensions: 7.5 x 13cm / 2.95 x 5.12 '' (approx) - Material: food grade silicone,304 stainless steel,ABS - Charging: Micro USB Charging Cable,Charging 3-4 Hours NOTE: - 1.Please do not use the product to pump alcohol and other stimulating liquids such as oil, as well as water hot over 55 ℃. - 2.Please do not full immersion the product in water for cleaning. - 3.Please charge 4-5 hours before the first time use.