At a glance - USB C Tester: Monitor USB-C power and charging. Measure voltage and amperage. Visualize the directional flow of electrical current. Updated OLED display is brighter and easier to read. New orientation button lets you flip the screen 180 degrees Bidirectional - USB power meter can be connected in either orientation, allowing for the full range of USB Power Delivery voltage from 5 to 20V (4V-22V, 50mA-6.5A operating range) Broad USB Support - Used as a data and power quality meter, device allows USB data pass through, USB-C Alt Mode video, USB-C charging. Use USB tester inline with USB-C docking stations, chargers, accessories, etc. Not compatible with Thunderbolt 3 devices Small and Tough - Small enough to go anywhere you need a USB C voltage meter. Even fits most phones and tablets without removing protective case. Strengthened USB-C connections ensure it's sturdy enough to be your go-to USB C power tester 2-Year Coverage, Lifetime Support - Every Plugable product, including this USB flash drive, is covered against defects for 2 years and comes with lifetime support. If you ever have questions, contact our North American-based team - even before purchase, Weight: 0.04 Pounds, Manufacturer: Plugable