Ozone Generator 500mg Per Hour with Built in Air Pump Timer Air Dryer Moisture Absorbing Silica Beads : Volume: 200 ml / Dimension of outlet: 6mm / Air inlet: open Adjustable Ozone output level Maximum Ozone Output: 200 mg/hr without air dryer connection / 500 mg/hr with air dryer connection Internal Air Pump Output : 1 - 2 L/min Timer : 1, 3, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90 min (decreased by every 1 min interval) and Constant ON function