Automated CPR Chest Compressions Machine,Length 20-1/2 In.,Width 9-3/8 In.,Height 22 In.,Weight 17-11/16,Power Source Rechargeable Battery,Compression Rate 100 Per min.,Compression Force 0kg to 70kg of Thrust,Compression/Ventilation Ratios 30:2 and 15:2,Rescue Breath Settings 2 sec., 1-1/2 sec., 1 sec.,Exterior Cover Material Medical Grade Polyethylene,Compressor Cylinder Material Medical Grade High Impact Polycarbonate,Operating Temp. 32 Degrees to 104 Degrees F