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 NewItem Type: MultimeterMaterial: ABSModel: ZT5566Working Power Supply: 2 x 18650 (Not Included)Battery Type: Lithium BatteryBattery Capacity: 4000mAHMain Functions: Measuring AC and DC voltage and current, resistance, capacitance, diode, continuous continuity test, frequency, alarm clock, for Bluetooth, etc.FunctionMeasuring RangeAccuracyDC 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 VersionV5.0Transmission Distance10m / 32.8ftNominal Power2x4 W RMSFrequency Range100Hz-18KHzDistortion1%Signal to Noise Ratio76dBWork EnvironmentTemperature0-40Humidity<75%Storage EnvironmentTemperature10-60Humidity<80%.Package List:1 x Multimeter (Battery Not Included)1 x USB Charging Cable1 Pair x Test Lead1 x User Manual