Safe Material: Made from food-grade 304 stainless steel and high-density ABS plastic, non-toxic and odorless. High Compatibility: Electric water pump designed for standard pure bottled drinking water; fits most 2–5 gallon water bottles without requiring lid removal. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery provides up to 30–40 dispenses or approximately 4–6 full 5-gallon bottles per charge. Easy to Use: Securely attaches to the bottle opening; one-button operation for simple, effortless use—ideal for all ages. Note: Compatible only with water bottles featuring a 2.16-inch (5.5 cm) neck diameter. Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3–4 hours Charging Method: 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 Pipe Length: 4.7 inches Instructions: 1. Connect the silicone hose and insert it into the bottle. 2. Attach the pump securely to the bottle opening. 3. Press the button to dispense water. 4. Press the button again to stop dispensing. 5. Recharge using the included USB cable when the battery is low. 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: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.