Battery-operated pillar measuring 3" W x 7" H has a flame-shaped flickering bulb set in a dripped wax sleeve. These timer pillars have two separate “on" functions. By switching the switch to the “1" position, the timer pillar will remain on until you turn it off. By switching the switch to the “2" position, the timer function is activated. This means the candle stays on for 6 hours, goes off for 18 hours, and then automatically turns back on for another 6 and off for 18, and so on. The time that you originally flip the switch to the “2" position will be the time it comes on each day. If you wish to reset the timer, turn the candle off and back on at the time you wish for them to be set.Uses 3 AAA batteries (not included).