RioRand 0.40" Electric Digital DC Clock Panel Gauge 12V/24V Car/Motorcycle Watch Green Powered by RioRand Advanced Technology 24-hour time display function, date display function, timer function;Power off memory function;Wide supply voltage, and with reverse protection function Supply voltage: 4.5 ~ 30V; Operating Current: &lt;20mA; Power supply lead wire:&gt; 120mm Time accuracy: &lt;/ = 2 seconds / day; Dimensions: 48  29  21 mm; Cutting size:45.5  26.5 mm; Working temperature: -10 ~ +65  c; Operating Humidity: 10 ~ 80% (non-condensing); Working pressure: 80 ~ 106 kPa;Sun exposure: no direct exposure