Intelligent detection, color screen display 9999 Hand-polished pure copper pen tip, DIY, economical, and affordable Equipped with a large-capacity battery, extended working time, and Type-C charging Diverse functions, optional series and parallel measurement modes, can measure quality factor and loss factor Three different frequencies: 100Hz, 1KHz, 10KHz Features6: Can test ordinary diodes and distinguish between positive and negative poles, Weight: 0.440924524 pounds, Manufacturer: Prterver