U.S. Divers AquaLung M2 Dive Monitor “As Is”

Pre-owned U.S. Divers AquaLung M2 Dive Monitor.  The monitor is untested because it needs a new battery replacement.  The Compass is in fine working condition (no bubbles) and so is the Pressure Gauge.  There is a small temp gauge that is not readable at all.  Comes with the high pressure hose.