<p>Combining all the best elements of previous models, the E-Duo from SodaStream takes water carbonation to the next level. The innovative machine boasts a bevy of upgraded features, including one-touch electrical technology and three preset levels of fizz. The dual carbonation system works with both glass and plastic bottles (one of each is included) for the ultimate in versatility and convenience. The E-Duo is also equipped with the company's patented Quick Connect system for fast, easy cylinder swapping – no twisting required.</p> <ul> <li>Features one-touch electrical technology and 3 levels of carbonation.</li> <li>Dual carbonation system accommodates both glass and plastic bottles; use glass bottle for serving at home and plastic bottle for on-the-go refreshment.</li> <li>Patented Quick Connect system allows simple, intuitive cylinder connection.</li> <li>Comes with 2 dishwasher-safe bottles – 1 glass and 1 BPA-free plastic – plus CO₂ cylinder (carbonates up to 60 bottles of water).</li> <li>Depleted CO₂ cylinders can be exchanged at Williams Sonoma stores or by visiting www.sodastreamusa.com.</li> </ul>