Features: Great tools for applications such as production verification, engineering testing, and DIYers. Measures output voltage, current, energy, capacitance, circuit equivalent resistance, D+and D-voltage of USB data cable & more. Monitor charging efficiency at any time- to protect charging equipment. voltage and current overload- detection. Designed to be accurate, reliable, stable, and portable. clear visibility in environments with low ambient lighting. Can inspect- USB chargers, portable power sources, data cables and other electronics charging devices. Specifications: Material: plastics Style: UT658A/UT658C/UT658DUAL/UT658Load(optional) Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x USB Tester