FEATURES -Long life piston cylinder which requires no lubrication or daily maintenance produces no pollution to the environment. -Provided with three kinds of electrical sources, AC 100V-240V 50/60Hz, external DC 12V, and internal battery, it can be conveniently used in many places. -The internal battery is charged with constant voltage and limited current while the unit is working or being attached to AC 100V-240V 50/60Hz or external DC 12V power supply. The capacity of the battery is respectively indicated by green, yellow and red. -Overflow protection device can safely and efficiently prevent the liquid from entering into pump. Bottles made of plastic material are transparent, durable and convenient for cleaning. -Body made of plastic material is handy and beautiful. The wall-mounting frame makes it widely used in the room, on vehicle and conveniently hung on the side of the wheelchair. SPECIFICATIONS Max vacuum:0.08Mpa (600mmHg) Vacuum range: 0.02Mpa (150mmHg)-Max. Vacuum Flow rate: 20L/min Jar capacity: 1000mL (PC) Noise:65db(A) Operation voltage: DC 12V or AC 100V-240V, 50/60Hz Power input: 110VA Battery duration of full charge:30min G.W.:6.5kg; N.W.: 4.5Kg Dimension: 21cm×14cm×30cm