Claber 8420 Aquadue Duplo Evolution Dual Outlet Digital Water Timer Programmable to calendar week, Sunday through Saturday 15 Minute preset manual mode extandable up to 60 minutes 2 Independent lines, up to 3 programs per line with watering duration range from 1 minute to 23 hours, 59 minutes Programs operate sequentially on 9v. Battery and weekly schedule effects both lines 2-Year manufacturer warranty