This MESR-100 auto-ranging capacitor ESR and low Ohm meter measuring range from 0.001 to 100.0R, support in circuit testing. Using true 100 KHz sine wave to measure the ESR value, which is equal to the testing method of capacitor manufacturer. Specifications: Color: Black Range         Accuracy(After zero,     Refresh Time(Manual Mode)              tested with 1,10,100R    Auto mode take 0 to 2s, more time              resistor)            depends on capacitance value. 0.000 to 1.000R  1%'2Digit             ～0.4s 1.000 to 10.00R  1%'1Digit             ～0.4s 10.00 to 100.0R  2%'1Digit             ～0.4s Accuracy: Up to 1% (detail on above table)  Wide Measurement Range: >1uF High Resolution: 4 digit, or 0.001Ohm @ 1 Ω range Measuring voltage: <～40mV RMS (TESTING VOLTAGE) External Power: 5V micro USB Operating Current: 0.02A Battery: 2 * AA 1.5V Battery (not included) Battery Life time: >80 Hours Item Size: Approx 14.5 * 8 * 3cm / 5.7 * 3.1 * 1.2in Item Weight: Approx 139.6g / 4.9oz Package Size: Approx 17 * 9 * 5cm / 6.7 * 3.5 * 2.0in Package Weight: Approx 218g / 7.7oz Package List: 1 * Capacitance Meter 2 * Test Clips 1 * SMD Clip 1 * User Manual Note: The Capacitance Meter is used for testing the internal resistance of the capacitor, not for testing capacitance value.