The Massimo TWW E-Kooler series is the latest E-Kooler that features dual-zone temperature control technology. The TWW75 also features Bluetooth control capability that offers the ability to control your E-kooler directly from your smartphone. Enjoy the versatility of the TWW75 by powering it from your car using the DC 12V adapter, or with the use of a solar panel. You can also plug it directly into any wall outlet or choose to use the battery pack as a wireless option. Complete with a sturdy sliding handle and rugged wheels, this E-Kooler makes maneuvering a breeze. The TWW75 E-Kooler includes one of the most reliable compressors in the industry that keeps food fresh and drinks ice cold. Whether you are fishing, hiking, vacationing, or even at a baseball game, the TWW75 will be your new favorite accessory.