Safe Material: BPA-free drinking water dispenser made of 304 stainless steel and high-density ABS plastic. Non-toxic and odorless. High Compatibility: Electric pumping device compatible with standard pure bottled drinking water. Fits various gallon-sized water barrels without requiring lid removal. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides operation for 30-40 days or pumps approximately 4-6 bottles of 5-gallon water on a full charge. No daily charging required. Easy to Use: Simple installation by attaching the pump to the bottle opening. One-button operation, user-friendly for children and elderly individuals. Compatibility Note: Designed for water barrels with a 2-inch (55mm) neck diameter. Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3-4 hours Charging Method: USB charging cable included Suitable for: 2, 3, 4, and 5-gallon water bottles Product Dimensions: 7.5 x 13 cm (approximately 2.9 x 5.1 inches) Hose Length: 55 cm (approximately 21.7 inches) Pipe Length: 120 cm (approximately 47 inches) Instructions: 1. Connect the silicone hose and insert it into the water bottle. Secure the water pump in place. 2. Press the button to dispense water. 3. Press the button again to stop the flow. 4. Recharge using the included USB cable when the battery is low. Color: Black and white Material: ABS plastic and stainless steel Package Contents: 1 x Water Pump 1 x Inlet Pipe 1 x Outlet Pipe 1 x USB Charging Cable Note: The package includes only the items listed above. Other accessories are not included. Note: Slight color variations may occur due to lighting conditions and screen display differences. Measurement error allowance is +/- 1-3 cm.