... designed to fit in the palm of your hand. Portable Laser Particle Counter Y09-3016 Laser Particle Counter is ergonomically ... Dim130*220*45 mm³(Wide*Deep*High)DisplayLCDWeight0.6KgBatteryLithium Ion Battery, 7.2V, 2200mAhPower SourceLi-ion Charger, 8.4 V ... :10-40Humidity:20-90RH, No CoagulationAtmosphere Pressure:86Kpa-106KpaAlarmLow Battery, 100,1000,10000 ClassCoincidence Loss5,2,000,000ps/cfOperating ...