Features: Full potential of your charger with the A2Q USB Voltage and Current Tester, featuring phone charging acceleration function that bypasses the 500mA limit for faster charging speeds. The A2Q tester is crafted from ABS and supports small current charging assistance, ensuring devices like earphones and children's watches receive a steady charging. This device is suitable for everyone, from enthusiasts to professionals who rely on various gadgets, ensuring all their small and large devices stay chargING. Suitable for use for home, in ffice, or while traveling, the A2Q USB tester help you maintain charging efficiency for your electronic devices. Suitable for monitoring power output and safeguarding your devices against charging current. Specifications: Component:ABS Size:Approx.47.2x21mm/1.85x0.82inch Package Includes: 1Pc USB Tester note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.