Three-speed adjustment: 0.25 Sec fast bubble. Different gears meet the needs of children and adults with different foam volumes. 300ml Large Capacity: It can dispense liquid 500 times, which can be used by the whole family for 50 days. Multi-function display: Displays the interior temperature (C/F) and remaining battery life. Multi-liquid application: Foaming hand sanitizers can be added directly. Other commonly used liquids (hand sanitizer, detergent, shower gel, etc.) can be used after being diluted with 3 to 8 times of water. Waterproof & USB Charging: IPX5 waterproof (soap dispenser cannot be returned), not afraid of the humid environment. Built-in 2,000mAh lithium battery, 3-hour charging time, 180-day super long standby time. Assembly...