8 Pack Solar Power Square Outdoor Post Cap Lights for 4x4 PVC Posts (Black) Energy efficient lighting solution  100% solar powered Long-lasting SMD LEDs provide better, brighter light than traditional LEDs Heavy duty ABS plastic construction is durable and can withstand the elements Set it and forget it! Dusk-to-Dawn timer means you only need turn the lights on once Designed to exclusively fit 4 x 4 PVC posts Lumen Brightness: 2 Light Color Temperature: 7500K Base Measurement: 4 x 4, made for 4x4 PVC posts Housing Material: ABS plastic Battery type: 400mAh AA Ni-Mh Working Time: 8 to 10 hours on full charge