Features: Versatile multimeter combines the function of multimeter, speaker, alarm clock, time, and thermometer in one. Able to measure DC/AC voltage, DC/AC current, resistance, capacitance, frequency/Duty Cycle, continuity, diode and ambient temperature. Voice broadcast can report the current mode and values in real time. Speaker funtion with BT connectivity allows you to connect your device and play musics, delivers excellent sound quality and decent bass, with 30 settings of volume control. LCD display, 19999 counts, with backlight, clear to read even in the dark. More features - buzzer, true-RMS, Auto/Manual ranging, data hold, max/min/relative value, low battery indicator, auto-off in 15 minutes, and Celsius/Fahrenheit degree. Comes with 18-in-1 combination line, which including u-shaped insert, alligator clip, universal plug, copper needle, cross/slotted screwdriver, and free-standing test lead. Multimeter Parameters: LCD Display: 19999 counts True RMS: yes Sampling Rate: 3 times per second DC Voltage: Range: 1.9999V-1000.0V; 19.999mV-199.99mV Resolution: (0.05%+3) AC Voltage: Range: 1.9999V-750.0V; 19.999mV-199.99mV Resolution: (0.3%+3) DC Current: Range: 1.9999A-19.999A; 19.999-199.99mA Resolution: (0.5%+3) AC Current: Range: 1.9999A-19.999A; 19.999mA-199.99mA Resolution: (0.8%+3) Resistance: Range: 199.99Ω-199.99MΩ Resolution: (0.5%+3)~(5.0%+5) Capacitance: Range: 9.999nF-9.999mF Resolution: (5.0%+20)-(5.0%+5) Frequency: Range: 99.99Hz-6.000MHz Resolution: (0.1%+2)