Features: -The streamlined back-plate frame provides a comfortable fit with a lower profile -Better designed shoulder straps to dispersive and reduce the user burden, aslo with ease of donning and doffing -Equipted with sFP or cFP facepiece, plus pressure demand regulator with First -Breath Activation and low exhalation resistance for easy breathing and reduced user fatigue -Fluorescent gauge and whistle end-of-service alarm be combined into one assembly for the ease of use Components Full Face Mask : Silicon Back Plate Assembly : Flame retardant (Nomex / Kevlar is available) Cylinder Valve : 90°C self-lock w/guage w/hand wheel Air Cylinder : 6.8L Composite (9.0L Composite is available)Alarm volume : > 90 dBA Working Pressure : 300Bar Alarm activation : 55±5Bar Weight(without air cylinder): 4.5KG Exhalation Resistance: 1000Pa Inhalation Resistance: 500Pa Approved temperature: 30°C to +60°C Nominal Duration : 45-60minutesApprovals : MED 96/98/EC/ EN137: 2006 / EN 136:1998+AC:2003 500Pa-30°C to +60°C 45-60minutes MED 96/98/EC/ EN137: 2006 / EN 136:1998+AC:2003