S4LN WHITE 1/2NM SOLAR NON-FLASHING STEADY-ON LED Marina Dock Barge Boat Safety Beacon Light Solar Warning Lamp - Solar Marine Light  Water Channel Marker Automated On/Off Photocell Switch make the Light Dusk On - Dawn Off NON-Flashing STEADY-ON 4 Super Bright LEDs Solar warning lamp for construction sites, work zones and around highway construction projects Minimum Autonomy: 60+hrs Run Time on Full Charge