4‑Level Adjustable Foam Output:Featuring four preset foam‑quantity levels (0.25s, 0.75s, 1.5s, and 2s discharge times), you can easily switch modes by pressing the power button. This controlled‑dose design helps minimize soap waste. USB‑Rechargeable with Extended Battery Life:Supports USB charging and contains a built‑in 1800mAh lithium battery. Once fully , it runs for about two months (actual duration varies with frequency of use), reducing battery consumption and eliminating the hassle of frequent battery replacements. Two‑Pack Value Set for Multiple Locations:This set includes two automatic sensor foam soap dispensers, allowing you to place one in the bathroom and another in the kitchen, or keep one as a spare. It's a cost‑effective solution for both household and use. Large 440ml Tank with Visible Window:Equipped with a high‑capacity 440ml liquid reservoir and a clear viewing window, so you can always check the remaining soap level. The easy‑open top enables quick, spill‑free refilling, making it suitable for high‑traffic bathrooms, kitchens, and public areas. Wall‑Mountable & IPX5 Waterproof Design:Can be used as a stand‑alone countertop dispenser or mounted without drilling-strong adhesive strips are included. The IPX5 waterproof housing and sealed USB port protect against water and soap splashes, extending the unit's lifespan.