This used fair condition Klein Tools ET900 is a professional-grade digital meter specifically engineered for standard USB-A ports, including Qualcomm Quick Charge components. It seamlessly captures and communicates active voltage, current, capacity, energy, and calculated resistance levels on a crisp digital display layout. Operating without any external batteries, the pocket-sized device draws power directly from the source under inspection. It incorporates convenient storage recall slots for up to ten past test iterations alongside integrated current and voltage overload protections. Note that as a used fair condition piece, the outer shell or screen may exhibit noticeable scuffs, marks, or signs of operational wear from previous tool handling, though the structural performance remains functional