Every Men Need This Device! Product Features: Professional Voltage Tester: The rechargeable multimeter can also be used as a professional non-contact voltage tester. The sensitivity of the ac volt tester is adjustable. High Efficiency: Activating capacitance, diode, v-alert, or auto mode measurement under any function design makes testing more convenient, and greatly improves your efficiency. Red and Green Backlight: The smart digital multimeter has a high-resolution LCD screen, with a red and green backlight, greatly enhancing the reading experience. Smart Mode: This smart multimeter tester can automatically measure AC and DC voltage, resistance, and continuity with the best resolution. All of these functions measurement can be done manually as well. Rechargeable: The intelligent multimeter comes with a rechargeable battery & charging cable, so you will never worry about power problems. Specifications: Continuity: If the resistance is less than 50Ω, the beeper sounds Diode: Measure diodes within 3V Power: 3.7V (built-in, rechargeable) Size: Package Includes: 1 x Smart Multimeter1 x Test Leads1 x Charging Cable1 x Carrying Case1 x Rechargeable Battery1 x User Manual