Thanks to the Sierra® Lido Pro Series Fog-Resistant Voltmeter Gauge, you'll always know if your boat's batteries are charged and healthy, or if their power is lower than it should be. Not only is this Pro Series boat gauge from Sierra completely fog-resistant, it also complies with SAE J-1810 standards for accuracy and reliability. It features a curved, scratch-resistant glass lens that's encased by a polished, stainless steel, near-flush bezel. Inside, the white dial displays easy-to-read black numerals and dashes, and a black pointer with a fire-orange tip lets you know the level of charge in your batteries. For easy nighttime readings, this gauge has white perimeter and red through-dial lighting. Gauge displays direct electrical current from 8 to 18V. IP65 waterproof rating. 12V. Completely fog-resistant. Meets SAE J-1810 standards for accuracy and reliability. At a glance, know the level of charge in your batteries. Displays direct electrical current from 8 to 18V. Curved, scratch-resistant domed glass lens. Polished, stainless steel, near-flush bezel. Easy-to-read black numerals and dashes. Black pointer with fire-orange tip. Lit for nighttime viewing. IP65 waterproof rating.