FEATURES: 1. The suction is only suitable for ambulance, boat and airplane in which must be equipped with power supply (DC-12V). 2. When it's used outside the car, accumulator12V-4AH or extension power cord must be used.   SPECIFICATIONS: Voltage DC-12V Max. HP 30W Vacuum pressure 60~65 cm/Hg Vacuum flow 20 liter/min Max. volume 1000c.c. N.W. 4.8 KGS Packing size L39 x W17 x H25 (cm)