Full potential of your with the A2Q USB 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 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. Different batches have different printed labels Colour:Transparent&Black Material:ABS Package Contents: 1 x USB Amperemeter Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.