Safe Material: BPA-free drinking water dispenser made of 304 stainless steel and high-density ABS plastic, no odor. High Compatibility: Electric pumping device suitable for standard pure bottled drinking water, fits various gallon barrel models without prying the lid. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Can pump 30–40 uses or approximately 4–6 bottles of 5-gallon water per full charge. No need to charge daily. Easy to Use: Simply attach the pump to the bottle mouth. One-button operation, user-friendly for kids and elders. Note: This drinking water pump is designed for gallon barrels with a 2.16-inch (5.5 cm) neck. Specifications: Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3–4 hours Charging: Micro-USB cable included Suitable for: 2, 3, 4, 5 gallon water bottles Size: 2.9 x 5.1 inches / 7.5 x 13 cm Hose Length: 21.7 inches Pipe Length: 4.7 inches Instructions: Connect the silicone hose and insert it into the bottle. Fasten the water pump, press the button to dispense water, and press again to stop. Charge using the included Micro-USB cable when the battery is low. Color: Black + White Material: ABS + Stainless Steel Package Contents: 1 x Water Pump 1 x Inlet Pipe 1 x Outlet Pipe 1 x Micro-USB Charging Cable Only the above package content is included; other products are not. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1–3 cm.