Touch free is the most efficient way to wash your hands, no germs or smudges left behind. Clog-resistant tubing pump ensures a precise and consistent flow and the silicone valve prevents messy drips. To control the amount of soap desired, you can position your hand up close to the sensor for a little soap and farther away for more. Funnel refill opening makes refills fast and easy, and it's water-resistance for easy cleaning. Rechargeable with included charging puck, one charge lasts up to 3 months. Use simplehuman soap for optimum pump performance. Also works with hand sanitizer.