Product Summary Easy-to-turn adjustable flow regulator knob conveniently placed directly below gauge for easy use and control on both models. Both models include a 800cc suction canister, 6' suction tube, 10" suction tubing, hydrophobic filter, elbow connector and manual. The Drive 18615 VacuMax Go Portable Suction Machine has all the same features and benefits that the 18610 VacuMax Plus provides, as well as an internal rechargeable, replaceable battery that lasts up to 60 minutes per change. The 18610 may be converted into the 18615 with the purchase and provider installation of the 18615-BATTERY. The 18615 may be charged while in use and requires less than 8 hours to reach a full charge. The Drive 18615 VacuMax Go is ideal for providing suction in the home or on the go, which comes complete with rechargeable battery, carry bag and a DC power cord for the car. The Drive VacuMax vacuum adjustments allow up to 150-530 mmHg and a free flow up to 25 lpm.