The HPVM is a graphing voltmeter for automotive and car audio builds, accurate to 1/500 of a volt and able to monitor two voltage sources at once. Its 1.3-inch TFT LCD shows 65,000 colors, and Bluetooth connectivity links it to the free AuralSync app, the optional AuralSync Companion smartwatch, and other AuralSync-enabled devices.

Gauge faces are chosen in the app, including a Sag face for voltage drop under load, a Wire Loss face for wiring losses, and a Night face with dim orange numbers for after-dark driving. The Competition face holds the lowest voltage of each hit, and Deep Sleep mode cuts consumption to about 167 mW until a voltage spike wakes the meter.