OXYTEK 5 LT CAPACITY OXYGEN (O2) CONCENTRATOR STARTING FROM 335 USD, LOWERS DEPENDING ON QUANTITY ORDERED. TECHNICAL SPECIFICATIONS: K5BW Device's Electric Senif Class II, Type BF Weight 16KG Dimensions 305 x 300 x 535 (Length Width Height) mm Working Type Continuous Flow adjustment button 0-5 LPM Oxygen concentration 931% 3% (0-5LPM) Oxygen concentration sensor's alarm 82% or less Maximum output power (to sdg Average sound level 45dB (A) Power supply 230VAC-50HZ Operating Temperature / Humidity Range and Oxygen Concentration below flow rate CONCENTRATION 96% -06%