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