High quality for professional use A wonderful replacement for broken or old one, ensures long and better work performance There are 2 air inlets/outlets atthe negative electrode of the cell,the upper is air inlet and the lower is air outlet The anode is connected to hydrogen, and the cathode is connected to the air in the atmosphere No short-circuit operation, no external voltage across the cell voltage Long-time operation, the positive and negative electrodes produce liquid water, you can use an air compressor or syringe to remove it with pressure Electrode Material: Monolithic MEA Size: 56.8x30x46.5mm Weight: about 63 g Power Generation Area: 25mm x 25mm Voltage Range: 0V--0.95V Current: 1.0A@0.6V (25°C) Anode : 99.99% Hydrogen Cathode : Air In The Atmosphere (Light blue version) Color: As Shown Material: plastic Package Contents: 1 * Power Generation Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.