ITEM NAME:1X LED USB Current Voltage Charging Power Detector Tester Volt Meter Ammeter Descriptio n Product Name: USB Current and Voltage Meter Test voltage: 3V-8V Test current: 0A-3A Allowable error: Â ±1% Product list: USB charging current voltage *1 Scope: mobile power test laptop USB USB phone charger USB adapter Car charger, etc. Product features: Easy to measure USB output voltage and equipment Working current, small size, high precision, plug and play Note: Support for Android phones and Apple phones Whatever the ending's perfect or not, you can't disappear from my world LED USB Current Voltage Charging Power Detector Tester Volt Meter Ammeter.Test current: 0A-3A. Working current, small size, high precision, plug and play. Note: Support for Android phones and Apple phones. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.