Eversame Digital Multimeter, Ammeter Voltmeter Capacitance & Watt Meter, DC 3.5A 15V Amp Voltage Power Meter, 9 Modes Charging System Tester, Fast Charging and Data Sync Dual USB Ports (White) 9 Modes USB Monitor: Specially designed to measure how fast a USB cable or USB power adapter charger is actually charging at. It allows to choose nine different display modes by pressing the button, meanwhile provides you a rough estimate of the capacity of the device you are charging Clear LED Display: Eversame USB monitor has clear LED display with white color, making it easy to monitor the charge voltage and current of your digital USB devices, while ensuring the optimal charge rate. Simultaneously displaying of Amp and Volt in real-time Dual USB output: There are two USB outputs available for using simultaneously. USB1 Port is for charging purpose, which has built-in circuit with containing CW3002D chip for accelerating Large Current Fast Charging. Perfect for Charge most of the mobile phones, mobile power, tablet PCs and iPad and other USB devices. The other output - USB2 Port2 is dedicated for both Data Sync and Battery Charging Test feature: Voltage cant exceed 15V, current cant exceed 3.5A. Capacity: 0~ 99999mAh. Accuracy: +/- 1%. Eversame multiple USB Detector can be used for capacitance checking, capacitance clear, over voltage and under voltage alarm, over-current, and short circuit alarm Satisfaction guarantee: We stand behind all of our products 100%. We offer you 100% hassle-free satisfaction guarantee to let you buy with confidence. For any reason you are unsatisfied with our product at any time, just feel free contact support for exchange or refund. Our customer service team are here and ready to assist you with any questions or concerns you may have before or after the purchase