1、Can be charged by power bank and computer. 2、Equipped with a USB cable for your convenience. 3、Easy and convenient for office, travel and work. 4、Made of high food grade PP material, stainless steel, ABS, high quality and safe to use. 5、This product quality is assured, as well as proving customer service & technical support for you. Features: Can be charged by power bank and computer. Equipped with a USB cable for your convenience. Easy and convenient for office, travel and work. Made of high food grade PP material, stainless steel, ABS, high quality and safe to use. This product quality is assured, as well as proving customer service & technical support for you. Specifications: Condition:100% Brand New Material: Borosilicate glass Color: As shown in the picture Size: Approx.75*75*250mm/3*3* 9.8in Weight: Approx.907g/32oz Power Mode: USB charging Capacity: 350ml Power: 4W Voltage: DC 5V Battery Capacity: 1000mAh Electrolysis Duration: 3 minutes / time Charging Time: 2 hours or so Hydrogen Content: 1200ppb Instructions: 1. For the first time, after soaking for 5 minutes to wet the electrolytic chip, press the button once, the blue light will be on after the sound is started, and the hydrogen production will be started. 2. The default electrolysis time is 3 minutes. After the electrolysis is finished, the blue light will automatically go out and there will be a drop of sound. 3. If you want to stop electrolysis in the middle, you can press and hold the button to force stop. 4. Please drink the hydrogen-rich water after electrolysis as soon as possible to avoid too long standing time, resulting in hydrogen volatilization. Package List: 1*Hydrogen-rich Water Cup 1*Data Cable Note: Because there was a manual measuring ,the size may has 1-2cm/inch difference. The color may be slight different due to the condition or light or different monitor.