electrode electrolysis, 3 seconds can electrolyze ordinary water into hydrogen water. Transparent visual water tank, transparent visual water tank, replenish water energy in time, and give your skin full water anytime, anywhere. and portable, sticks when you go out without taking up space, and revitalize your skin anytime, anywhere. Mineral water can be added directly. Charging time: 2.5 hours Working time: 1.5 hours continuous Water tank capacity: 15ml Battery power: 500mAh Colour:B: White Material:plastic Package Contents: 1 x Hydrogen Water Diffuser 1 x USB Cable 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.