Most luxurious way to wash your hands. Touch-free so no germs or smudges are left behind. Fast, precise motion sensor triggers aerating diaphragm pump to deliver just the right amount of rich, creamy pre-lathered foam. To control the amount of soap desired, position your hand up close to the sensor for a little soap and farther away for more. Waterproof for easy cleaning. Refills are easy — just eject the old cartridge and insert a new one. Rechargeable — one charge lasts up to 3 months. Lavender foam hand soap plus a refillable cartridge included. Works exclusively with foam soap cartridges from simplehuman as well as EO, Antica Farmacista and Deep Steep.