New. Open box. By Wacaco. No battery or electricity needed. Manual operation only. You can reach a maximum of 18 bars (261 PSI) of pressure. Works best with finely ground coffee. It lows you to brew perfect cups with a nice and dense cream layer. This model requires 15% less force to pump than previous models. Water tank holds 80ml of water. The ridged cup and water tank protects your hand from the heat. Includes a protective case and has a built in cup.