AVERLAST 25 can be equipped with a rechargeable battery (accumulator) and this battery is optional. Integrated microprocessor-based technology assures safe charging of the battery; overcharging is thus impossible. An over temperature stop controlled by electronics avoids overheating of the unit. A disposable bacterial filter plate integrated in the lid of the collection jar prevents bacteria and liquid from penetrating into the pump. Features 1. Powerful suction up to 0.08Mpa 2. Double anti-overflow protection system 3. Direct Plug-in Bottle System, only one push to take out bottle 4. 1400ml capacity suction bottle 5. Innovative filter technology which prevents penetration of micro organisms and secretion into the device 6. Only one inlet for suction hose, avoid misleading of air inlet and outlet 7. Easy clean & sterilize & user-friendly operations 8. 18L & 25L air flow options Accessories 1 Silicone suction hose 6mm, L=1.30m 1 Universal PC power cord wires 2 filter 3 Suction catheter (free)