Specifications: 1. Touch-free soap dispensers are ultra hygienic 2. Infra red sensor makes it safe by eliminating contact with contaminated surfaces 3. Convenient by design, wall mountable. 4. Mounting hardware included 5. Drip free design, refills in seconds 6. Anti-soap leakage system 7. Delivers up to 30.0000 dispensing using 4 (aa) batteries 8. Tinted lid shows when supply is low 9. Placing hands beneath the unit releases a single, adjustable dose of liquid soap, lotion, shampoo etc. One new model v-410 can be chosen big and small drip by yourself!