Pump In Style® Advanced Breast pump Backpack with 2-Phase Expression® technology for maximum milk flow. One touch 'let-down' button designed for faster milk flow. Customized pumping with adjustable speed and vacuum control. Stylish black backpack bag in easy-to clean microfiber. Contains: backpack bag with integrated motor unit; battery pak (8 AA batteries not included); insulated, PVC-free cooler bag; double pumping kit with (4) 5oz/150ml BPA-free breast milk bottles and lids; (2) standard size (24mm) PersonalFit_ breast shields; (2) valves; (4) membranes; ice pack; instructions and Breastfeeding Information Guide. UL listed; 120 VAC; 60 Hz transformer. One year limited warranty on motor; 90 day limited warranty on other parts. AC operation. Also operates with 9-volt Vehicle Lighter Adapter (Article #67174, sold separately). Single-user product. For daily use.DEHP & BPA-free.