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 pure bottled drinking water; fits 2, 3, 4, and 5-gallon water bottles without requiring lid removal. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery provides operation for approximately 30–40 dispenses or 4–6 full 5-gallon bottles per charge. Easy to Use: Secure the pump onto the bottle opening; one-button operation for effortless use, ideal for all ages. Note: Designed for bottles with 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: Micro-USB 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: Connect the silicone hose and insert it into the bottle. Secure the pump on the bottle opening. Press the button to dispense water; press again to stop. Recharge using the included micro-USB cable when the battery is low. Color: Black and white Material: ABS plastic and stainless steel Package Contents: 1 × Water Pump, 1 × Inlet Pipe, 1 × Outlet Pipe, 1 × Micro-USB Charging Cable Note: Screen settings and lighting conditions may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.