Apex Lighting LED Dimmable Chart Light. This LED chart light makes an excellent lighting accessory for the interior of any marine vessel and it features dimming capabilities. With a base measuring only 1.5" in diameter, this dimmable LED chart light takes up minimal space, while providing maximum illumination. This LED chart light has a single 3 watt LED light and a switch the powers the light off and on while also controlling the dimming feature. This LED dimmable chart light has a polished chrome finish and is avaiable for purchase at 4-inches, 6-inches, or 14-inches.