Product details:

• Brand:  GCE
• Model:  Zen O 
• Dimension: 212 mm × 168 mm × 313 mm
• Weight:  4.66 Kgs 

Technical specs: 

• Modes: Continuous (0.5 to 2 LPM), and Pulse(Level 1 to level 6) 

• Avg Power Consumption:  
• Sound level:  38 dBA
• Output pressure:  141 Kpa
• Input voltage: 100-240VAC  +-10 %  
• OPI (O2 percentage indicator):  <82%  
• Oxygen concentration: 93% (+/3%)
• Battery backup: Approx.4hours with a single battery or 8 hours with 2 batteries at 18 BPM