1Digital multimeter with auto range display of 19999 count, durable in use. 2LCD display digital multimeter is easy to operate and high in accuracy. 3Adjustable backlight brightness for clear reading, more convenient to use. 4With clock, alarm clock, for Bluetooth audio and ambient temperature display. 5Support for music, listening to music while working to relieve work stress.Condition: 100% Brand New Item Type: Multimeter Material: ABS Model: ZT5566 Working Power Supply: 2 x 18650 (Not Included) Battery Type: Lithium Battery Battery Capacity: 4000mAH Main Functions: Measuring AC and DC voltage and current, resistance, capacitance, diode, continuous continuity test, frequency, alarm clock, for Bluetooth, etc. Function Measuring Range Accuracy DC Voltage (V) 1.9999 V / 19.999 V / 199.99 V / 1000.0 V (0.05%+ 3) DC Voltage (mV) 19.999mV / 199.99mV (0.05%+ 3) AC Voltage (V) 1.9999 V / 19.999 V / 199.99 V / 750.0 V (0.3%+ 3) AC Voltage (mV) 19.999mV / 199.99mV (0.3%+ 3) DC (A) 1.9999A / 19.999A (0.5%+ 3) DC (mA) 19.999mA / 199.99mA (0.5%+ 3) AC Current (A) 1.9999A / 19.999A (0.8%+ 3) Alternating Current (mA) 19.999mA / 199.99mA (0.8%+ 3) Resistance () 199.99 (0.5%+ 3) Resistance (K) 1.9999k / 19.999k / 199.99k (0.2%+ 3) Resistance (M) 1.9999M / 19.999M (1.0%+ 3) Resistance (M) 199.99M (5.0%+ 5) Capacitance (F) 9,999nF (5.0%+ 20) Capacitance (F) 99.99nF / 999. 9nF / 9.999uf / 99.99uf / 999.9F (2.0%+ 5) Capacitance (F) 9.999mF (5.0%+ 5) Frequency (HZ) 99.99Hz / 999.9Hz / 9.999kHz / 99.99kHz / 999.9kHz / 6,000MHz (0.1%+ 2) For Bluetooth Version V5.0 Transmission Distance 10m / 32.8ft Nominal Power 2x4 W RMS