450ml Portable Hydrogen Rich Water Ionizer Transparent Water Glass with Lid High Quality BPA-free Business Glass Cup Large Capacity Water Bottle

Bought this for my brother. Seeing the bubbles rise and the changing colors show is great. The hydrogen water really boosts feelings of well-being and makes drinking lots of water easy. However, the USB connection was weakened from frequent charging. Contact was shot; within 3 months.

Really liked it at first but water dripped into the connector and it wouldn't work after 3 days.

Works well, but doesn't always stop lighting up when it is done hydrogenating the water. Gets funny smell after each use.

This device has some weaknesses, but I think I can work around them to get this unit to last and produce a decent amount of H2. Here is my advice, if you want to use it: 1. Per the reviews, the power port is prone to failure. My solution: Keep the usb cord in to prevent wear and tear. Unplug the USB outlet adaptor (not included!) from the wall outlet when you have to move it and to turn it on. Sidenote: This device does not have a switch, plug it in and it goes for 6 minutes and shuts off. To get it to go again, unplug it (from the wall to save your USB ports) for 5 seconds and plug it back in. 2. Per the reviews, water can get into the USB port and kill it. So when you fill it, always have it tilted slightly with the USB port up. If it overflows a bit, it will go down the other side. 3. The lid has a huge, hollow space above the lip of the bottle. This is bad, and probably the reason some folks have measured very little H2 in the water. When the H2 bubbles up, it gets diluted in the huge airspace in the lid. I happened to have rubber sheets from another project and cut a round piece to fit in. If you can rig something like this up yourself, you will probably get a decent amount of H2. Still, a bad design to start with. In addition, to help get the H2 up as much as possible, you can run it multiple times. After 6 minutes, when the light goes out, unplug (from the wall outlet), wait 5 seconds, plug it back in. You can do this several times if you have nothing better to do! I use reverse osmosis water because I have an RO setup. It bubbles fine. About 1/3 of the gas formed is O2, so that will dilute the H2 as well. That is just the nature of hydrolysis, and why even with a perfect setup you will probably be under 1 ppm. You can get higher with other techniques, or spending a LOT of money for a hydrolysis system with a membrane between the electrodes that diverts the O2. The pyrex glass looks nice and thick, and the device does look cool.

Unit really needs instruction. You need a decent amount of minerals to get a lot of hydrogen to be produced. You definitely can't use salt or regular water as it produces the really toxic chlorine byproduct which can be smelt and tasted. Also annoying this one doesn't have a battery like all the others, so has to be plugged into the usb, and the other versions that is the same price and looks similar to this with the different cap do have the battery.