Safe Material: Made of food-grade 304 stainless steel and high-density ABS plastic, non-toxic and odorless. High Compatibility: Electric water pump compatible with standard 2-, 3-, 4-, and 5-gallon water bottles; fits bottles with a 2.16-inch (5.5 cm) neck opening—no lid removal required. USB Rechargeable Battery: Built-in 1200 mAh rechargeable battery provides up to 30–40 dispenses or approximately 4–6 full 5-gallon bottles per charge. No daily charging needed. Easy to Use: Secure the pump onto the bottle opening; one-button operation for simple, intuitive use—ideal for all ages. Specifications: Operating Voltage: DC 3.7 V Power Rating: 3.8 W Charging Time: 3–4 hours Charging Method: Included USB charging cable Compatible Bottle Sizes: 2, 3, 4, and 5 gallon water bottles Dimensions: 2.9 × 5.1 inches (7.5 × 13 cm) Hose Length: 21.7 inches (55 cm) Inlet Pipe Length: 4.7 inches (12 cm) Color: Black and white Materials: ABS plastic + 304 stainless steel Package Includes: 1 × Water pump 1 × Inlet pipe 1 × Outlet pipe 1 × USB charging cable Note: This package includes only the items listed above. Other accessories shown are not included. Note: Due to variations in screen settings and lighting conditions, actual product color may differ slightly from images. Measurement tolerance: ±1–3 cm.