Brand N/A Model YB27T Quantity 1 Color Black Material Plastic + iron Specification Power supply voltage: 4.5~30V (wide range); Standby battery: CR1220 cell battery (the back-up source of clock could drive working for over 6 months with no power supply); Working current: 120mm; Time accuracy: 2sec/day; Display style: 0.4 inch LED with Blue color; External dimension: 48 * 29 * 21mm; Installation pore: 45.5*26.5mm; Working condition limitation: Minimum power supply voltage: +4.5V; Maximum power supply voltage: +30V; Working temperature: -10C~+65C; Working humidity: 10~80% without condensation; Working air pressure: 80106kPa Features Electronic clock Application Electronic products or DIY projects English Manual/Spec Have Packing List 1 x Electronic clock (12cm-cable)