*Smarlean iSoap dispenser can select pre-set doses by simple “Click” by end-users, it gives them the ability to choose.*Smarlean iSoap dose can be factory set. Customer can specify the number of the doses (2,3 or 4 different doses) and the amount of the doses ( each single dose: 0.4ml to 1.4ml), we can customize it for you. *Industry reliability: After a cycle the pump always returns to the home position and provides positive sealing without leak. *Uses 4 size C Batteries, battery life120,000 cycles.