Our foam cartridge sensor pump is the most luxurious way to wash your hands, and it’s touch-free so no germs or smudges are left behind. Triggered by our fast and precise motion sensor, the aerating diaphragm pump delivers just the right amount of rich, creamy pre-lathered foam. And with variable dispense, you can control the amount of soap desired by positioning your hand up close to the sensor for a little soap and farther away for more. It's also waterproof for easy cleaning. Refills are easy — just eject the old cartridge and insert a new one. The pump is rechargeable — one charge lasts up to 3 months. Works exclusively with a refillable and prefilled cartridges from simplehuman Antica Farmacista and NEST Fragrances.