Calculations (automatic);Potential Index and Dielectric Absorption Ratios;Measurement tool tests Continuity, Resistance and Frequency Measurements;Programmable Alarms;Insulation Test, Resistance, Continuity;Hazardous Voltage Alert (Icon) if voltage is 70 volts 5.) On Board Timer, +1/- 1 sec;Delta Reading "?REL";Data hold with 300 Entry Memory;Standby Mode (automatic) saves battery power;Hand Held, Compact Light Weight Form;Intuitive Layout with Rotary Function Selector and Large Test Button;Molded in Magnetic Mount allowing lineman to make hands-free measurements;Limited Life Time Warranty