... Constant0CompensatorTypeMagnetic Damping PendulumWorking Range±15'Accuracy0.5''Power SupplyBatteries (Li)Rechargeable (4.8v)Adaptor (Charger)110-220v,50HzContinuous Working TimeApprox. 15 ... -proof and Dust-proofIP54Ambient Temperature-20°C~+50°CStandard AccessoriesAdaptor (Charger), Adjusting Pin, Allen Wrench, Battery (Rechargeable), Desiccating Agent, Dust Cover, Plastic ...