"In their rugged, sealed housing, the CA 6460 and CA 6462 are easy to use and are designed specifically for operation in the field. The CA 6460 and CA 6462 help to establish a fast and accurate diagnosis with optimum comfort and safety. Use conventional stake methods (3- or 4-wire). Indicator lights warn of elements impacting measurement (noise or excessive resistance in the voltage circuit). The earth \/ resistivity kit must be ordered separately.Absolute Maximum Resistance Measurement = 1.999kOhmsBest Accuracy = ±2% + 3 DigitsDisplay Type = LCDBattery Life = 6 hBattery Type = Rechargeable NiMHPower Source = Battery, MainsDimensions = 273 x 247 x 127mmWeight = 3.3kgHeight = 127mmIncludes = Mains Lead, User Manual"