papr respirator with long battery life

{"cid":"91221935","title":"HEPA Filter Air Papr Respirator Mask Blower 4 Hours Rechargeable With Battery","imgUrl":"https:\/\/img.chinax.com\/nimg\/9b\/d0\/0cd22e9a3784601dc18036b91b36-200x200-1.jpg","attrs":{"Price":"$249.00\/sets >=1 sets","Brand Name":"KELISAIKE","Model Number":"Per the description","Minimum Order Quantity":"1","Description":"KL99 Powered Air Purifying Respirator PAPR with 3 HEPA Filters for Industrial and Chemical Protection","Stock":"1PC","Function":"Air Breathing Apparatus PAPR","Battery":"12V\/3400mAh chargeable Li-ion Battery","Charging Cycle Times":"200 times","Working hours at full power":">4 hours","Air output gear":"145L\/min","Acoustic sound level:":"<50dB","Weight":"<850g","Alarm":"Automatic detection and warning of low voltage","Port":"FOB Nanjing \/ FOB Shanghai","Certification":"CE","Place of Origin":"Nanjing,China"}}

{"cid":"91211450","title":"YJJ AO-07 Electrochemical Oxygen Sensor with Oxygen Battery Can Replace MOX-3","imgUrl":"https:\/\/img.chinax.com\/nimg\/86\/4f\/83e22ecc6cac514b8598033dd18d-200x200-1.jpg","attrs":{"Brand Name":"YJJ","Model Number":"AO-07","Minimum Order Quantity":"1","Delivery Time":"3 days","Place of Origin":"CHINA","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"2200","Packaging Details":"canning","Output voltage":"9-13 mV (in air)","Measurement range":"0-100%","Temperature compensation":"< 2% O\u00b2","Response time (T90)":"<15 seconds"}}