Safe Material: Drinking water dispenser made of 304 stainless steel and high-density ABS plastic, non-toxic and odorless. High Compatibility: Electric pumping device suitable for standard pure bottled drinking water, compatible with various 2, 3, 4, and 5-gallon water bottles without prying the lid. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides power for dispensing approximately 4 to 6 full 5-gallon water bottles (30–40 uses). No need to charge daily. Easy to Use: Simply attach the pump to the bottle opening. One-touch operation, convenient and user-friendly for all ages, including seniors. Note: This water pump is designed for water 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: USB charging cable included Compatibility: Works with 2, 3, 4, and 5-gallon water bottles Product Dimensions: 2.9 x 5.1 inches (7.5 x 13 cm) Hose Length: 21.7 inches Pipe Length: 4.7 inches Instructions: 1. Connect the silicone hose and insert it into the water bottle. 2. Securely attach the water pump 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 + White Material: ABS + Stainless Steel Package Contents: 1 x Water Pump 1 x Inlet Pipe 1 x Outlet Pipe 1 x USB Charging Cable Note: Lighting and monitor differences may cause slight color variations between the product image and the actual item. Measurement may vary by ±1–3 cm.