PORTABLE BATTERY OPERATED SUCTION UNIT – Capacity: -550mm Hg Vacuum, 15 ltrs/ min. – Power: Operated on 220 V AC and 12 V battery, 55 watts. – Vacuum Gauge: 6.25 cms (2.5 inch, square dial). 0-760mm Hg calibration. – Jars: Autoclaveable 1 ltr. Collection jar, overflow safety jar with bacterial filter impregnated in lid. – Pump Type : Oil free piston pump. – Housing: Robust engineering plastic moulded shock resistant ABS housing-provision for fitting second 1 ltr. jar on the other side, with 2 size hooks to hold tube. – Dimensions & Weight: 20 X 42 X 36cms. Weight : 9Kg. – Battery Backup: 60 minutes on full charge.