Welcome to the store! Easy to use: The USB voltage tester detects voltage in real time, current, power, and other data are clear. Compact, portable, and requires no extra power, ideal for most applications such as mobile phones, power banks, tablets, and other electronic products. Basic parameters: This USB voltage tester and current tester use advanced SMAT technology, compatible with QC 2.0 / QC 3.0 fast charging tests. Capacity range: 0-9999mAh. Power measurement range: 0-90W. Measurement range: Voltage measurement range 3.2-10V. Current measurement range 0-3A. Professionally manufactured, strictly produced according to factory specifications. Perfect size, each component is strictly tested. Excellent durability: The frame of this USB power meter is made of high-quality ABS material. It has good wear resistance and high temperature resistance. Good transparency and ensures maximum strength and durability, extending the lifespan. Your satisfaction is our top priority. We will provide you with the best service. If you find any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best solution!