Saitec &reg; New USB Power Meter USB Current Meter - Also Working as USB 2.0 Hub with Two USB Ports for Charging and Data Sync - Portable USB Power Monitor USB Current Monitor USB Charging Tester and USB Monitor Adapter - Dual Bright LED Display for Concurrent Real-Time USB Current and Voltage Monitor - Best Tools to Check Solar Panel Charger USB Wall Charger Power Bank Performance and Lightning Cable Micro USB Cable Quality - Two Colors Clear View for Amp and Volt Readers - Great Outdoor Visibility Under Strong Sunlight - Improve Charging Efficiency for iPhone iPad Galaxy Smartphone and Tablet Kindle Nexus - Must Have DIY Gadget Gift for Kid or Teenager - Premium Quality USB Detector Dual Color Current and Voltage Meter for USB interface Simultaneously displaying of Amp and Volt in real-time Measuring Range: Voltage 3.0 ~ 10V Current 0 ~ 3A Accuracy: +/- 1% USB Output Port 1 is dedicated for both Data Sync and Battery Charging USB Output Port 2 has built-in circuit for Accelerated Large Current Fast Charging