4-pack of 42" solar driveway markers used to help visibility during poor weather. The markers have two settings, steady and flashing. To switch the setting, remove the light from the pole; the switch is located under the light. Markers recharge over a 6-8 hour period in the daylight. Once charged, markers provide 6-8 hours of steady illumination, or 12-14 hours of illumination on the flashing setting. No wires needed to install these items. Easy to install.