Feature: 1. Digital multimeter with auto range display of 19999 count, durable in use. 2. LCD display digital multimeter is easy to operate and high in accuracy. 3. Adjustable backlight brightness for clear reading, more convenient to use. 4. With clock, alarm clock, for Bluetooth audio and ambient temperature display. 5. Support for music, listening to music while working to relieve work stress. Specification: 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 (Ω) 199.99Ω ±(0.5%+ 3) Resistance (KΩ) 1.9999kΩ / 19.999kΩ / 199.99kΩ ±(0.2%+ 3) Resistance (MΩ) 1.9999MΩ / 19.999MΩ ±(1.0%+ 3) Resistance (MΩ) 199.99MΩ ±(5.0%+ 5) Capacitance (F) 9,999nF ±(5.0%+ 20) Capacitance (F) 99.99nF / 999. 9nF / 9.999uf / 99.99uf / 999.9μF ±(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 Frequency Range 100Hz-18KHz Distortion ≤1% Signal to Noise Ratio ≥76dB Work Environment Temperature 0-40℃ Humidity