The Miniflo-L communicates with most popular GPS receivers. It features a seven-segment red LED display, constant fuel flow rate (combined rate in left window for twins, with the capability of displaying individual engine flow rates at the touch of a button), fuel used, fuel remaining, endurance, low fuel warning (by time and volume), fuel to destination, fuel in reserve upon reaching destination, nautical miles per unit of fuel, and add/full switch for one-touch fueling. TSO-C44a, Size: 3.25"W x 1.25"H x 7.5"L, Weight: 14 oz., Accuracy ±1%