Safe Material: Drinking water dispenser made of 304 stainless steel and high-density ABS plastic, non-toxic and odor-free. High Compatibility: Electric pumping device suitable for standard bottled drinking water; fits various gallon-sized barrels without prying the lid. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides power for dispensing approximately 4 to 6 bottles of 5-gallon water (around 30–40 uses). No need to charge daily. Easy to Use: Simply attach the pump to the bottle neck. One-button operation, user-friendly for all ages, including seniors. Note: This water pump is 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: Micro-USB charging cable included Compatible 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 bottle. Secure the water pump in place. 2. Press the button to dispense water. 3. Press the button again to stop dispensing. 4. Recharge using the included Micro-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 Micro-USB Charging Cable Note: Lighting and monitor settings may cause slight variations in color between the image and the actual product. Measurement tolerance: ±1–3 cm.