Echo flask vs Echo go Hydrogen Water Bottle

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The Short Answer

Buy the Echo Flask if you want Echo Water hardware: it is the only portable bottle Echo still sells, and the only one with app tracking. The Echo Go is retired, and the bottle sold under that name on Amazon is a 380 ml glass model from a different manufacturer at a far lower price tier. Know which you are buying.

That is the short version of a comparison that has quietly stopped meaning what it used to. If you are still deciding between categories rather than models, start with which hydrogen water bottle is best. Otherwise, here is exactly what is still on sale and what each figure below is sourced from.

Which Echo Bottles You Can Still Buy

Echo Water has made three portable hydrogen bottles: the Echo Go, the Echo Go+ and the Echo Flask. Only one of them is still in Echo’s own catalog. You can check this yourself, because Echo’s own product URLs answer the question directly:

Echo product URL	What it returns today	What that tells you
echowater.com/products/echo-go	Redirects to Echo’s homepage	The Echo Go no longer has a product page at all
echowater.com/products/echo-go-plus	Redirects to the Echo Flask page	Echo points Go+ traffic at the Flask as its successor
echowater.com/products/echo-flask	Loads normally	The Flask is Echo’s current portable bottle

Echo’s live catalog backs that up: among portable bottles it lists the Flask and nothing else. So the honest framing of this comparison in 2026 is not “which of these two is better” but “one of these is Echo’s current bottle, the other is a name Echo has moved on from”.

The Echo Go Name Now Covers Three Different Products

This is the part that catches buyers out, and it is the reason the specs you find online for the Echo Go contradict each other. Three distinct products are involved:

• The original Echo Go – Echo Water’s first portable bottle, now withdrawn from Echo’s catalog.
• The Echo Go+ – its successor, a 9.5 oz polycarbonate bottle that Echo also no longer lists, though other retailers still stock it.
• A 380 ml borosilicate glass bottle sold under the Echo Go brand name on Amazon – made by a different company, LSTKJ, and unrelated to Echo Water’s hardware.

The clearest evidence for that last one is Amazon’s own stored product name for the listing, which reads New Upgraded Version Hydrogen Water Bottle … Glass 380ml (Black) – with no mention of Echo anywhere in it. The seller does use “Echo Go” as its Amazon brand name, which is why the listing surfaces for Echo searches, but the manufacturer field on the same listing reads LSTKJ, and the product is categorized under pitcher water filters rather than sports water bottles.

None of that makes it a bad bottle. It is a glass hydrogen generator at a fraction of either Echo bottle’s price, and it should be judged on its own terms. It simply is not an Echo, and a page comparing “Echo Flask vs Echo Go” owes you that before you click a buy button.

Side-by-Side Comparison: Echo Flask vs Echo Go

The table below shows the two products this page links to: Echo Water’s Echo Flask, and the 380 ml glass bottle sold under the Echo Go name.

What Echo Publishes: Flask vs Go+

Every figure in this table comes from Echo Water’s own published comparison, and should be read as a manufacturer claim rather than a measured result. No independent titration figures have been published for either bottle.

Specification (manufacturer-stated)	Echo Go+	Echo Flask
Maximum capacity	9.5 oz	12 oz
Hydrogen concentration	2.5 to 4.5 ppm in 5 or 10 minutes	Up to 8 ppm in 20 minutes
Material	Food-grade BPA-free polycarbonate	BPA- and BPS-free PPSU
Battery	2200 mAh, 5 to 10 cycles per charge	2200 mAh, up to 7 cycles per charge
Electrodes	Titanium-coated platinum	Titanium-coated platinum
Membrane	Dual-chambered PEM	Nafion dual-chambered PEM
Cleaning	Polarity-reversing electrodes, automatic	Same, plus a dedicated cleaning cycle
Intake tracking	Not available	Tracks hydrogen intake, water intake and cycles
App connectivity	Not available	Syncs with the Echo Water app
Cycle control	Automatic completion only	Schedule, pause, shorten or stop a cycle
Warranty	60-day returns, 5-year warranty	60-day returns, 5-year warranty

Two things in that table are worth pausing on. Both bottles carry the same 2200 mAh battery – the widely repeated figures of 2000 mAh for the Flask and 1500 mAh for the Go do not come from Echo. And both bottles have polarity-reversing self-cleaning electrodes; the Flask adds a dedicated cleaning cycle on top, but self-cleaning is not a Flask-only feature, whatever you may read elsewhere.

Echo Flask: What the Manufacturer Specifies

Design and Portability

Echo lists the Flask at 10 inches tall by 3 inches wide by 2 inches deep, with an empty weight of about 1 lb (455.5 g). Amazon’s structured specification for the same product reads 4.06 inches wide by 10.16 inches tall with an item weight of 0.85 kg – most likely a shipping weight. The two sources genuinely disagree and we are not picking one; if the exact footprint matters for a particular cup holder, check the dimensions on the retailer page before you commit.

The bottle carries an illuminated LCD touchscreen that shows a countdown timer for each cycle, and it can be used while charging. For a closer look at the Flask on its own, see our echo flask review.

Hydrogen Concentration and Cycle Times

Echo rates the Flask at up to 8 ppm on its 20-minute cycle. Echo’s Flask specification page gives a fuller picture: up to 6.07 mg/L of dissolved hydrogen after a 10-minute cycle and up to 8.25 mg/L after 20 minutes. Figures of around 5 ppm for the 10-minute cycle circulate widely and are lower than anything Echo itself publishes.

The generation system is Solid Polymer Electrolysis with a Nafion dual-chambered Proton Exchange Membrane, using titanium-coated platinum electrodes. Note the order of those two metals – it is frequently reported the other way round.

Battery and Charging

Echo specifies a rechargeable 2200 mAh (7.4 Wh) lithium-ion battery supporting up to 7 cycles on a single charge, over USB-C. Echo does not publish a charge time, so any specific figure you see for that is unsourced.

Capacity, Materials and Cleaning

Capacity is 12 oz (0.36 liters), which Echo’s own comparison puts slightly above the Go+ at 9.5 oz. Echo describes the body as BPA- and BPS-free polyphenylsulfone (PPSU); Amazon’s structured material field for the same listing names three polymers – ABS, polycarbonate and polyphenylsulfone – so PPSU is part of the construction rather than the whole of it.

On cleaning, the Flask has polarity-reversing electrodes and a dedicated cleaning cycle. That is not the same as being maintenance-free: the care instructions on the product listing specify running a cleaning cycle with cider vinegar and filtered hot water weekly.

Price Tier and What You Get for It

The Flask sits in Echo’s premium tier, in the $250 to $350 range at the time of writing. That buys the highest hydrogen figure Echo publishes for a portable bottle, the app and tracking features neither Go model has, and a 5-year warranty with a 60-day return window. Check the current price on the retailer’s page rather than trusting any number quoted here or anywhere else – these move.

For context on the wider market: countertop hydrogen machines run into four figures, hydrogen tablets carry a recurring monthly cost, and entry-level bottles sit well below the Flask while generally publishing lower concentrations. For how portable bottles fit the wider category, see the full hydrogen water bottle overview.

The Echo Go Family: What Each One Actually Is

The Original Echo Go

Echo’s first portable bottle, and the model this page was originally named after. Its product URL on Echo’s site now redirects to the homepage, so Echo publishes no current specification for it. If you are looking at a second-hand or old-stock unit, our echo go review covers what was known about it.

The Echo Go+

The Go+ is the model most “Echo Flask vs Echo Go” comparisons are actually describing, including most of what you will find on other sites. Echo specifies it as a 9.5 oz food-grade polycarbonate bottle producing 2.5 to 4.5 ppm on a 5- or 10-minute cycle, with the same 2200 mAh battery as the Flask and the same 5-year warranty, but no app, no intake tracking and no cycle control.

One inconsistency worth flagging rather than resolving: Echo describes the Go+ body as polycarbonate in its comparison table and as Tritan elsewhere in its own documentation. Both claims are Echo’s. For the fuller picture see our echo go plus review.

Echo redirects the Go+ product URL to the Flask, which is a clear statement about which model it considers current. The Go+ is still available through other retailers, and if the smaller size suits you better it remains a reasonable buy – just buy it knowing it is not the model Echo is developing.

The 380 ml Glass Bottle Sold Under the Echo Go Name

This is the product the Echo Go listing on Amazon actually sells, and the one this page’s own buy button opens. Its seller specifies a 380 ml borosilicate glass body, SPE/PEM electrolysis quoted at 1.2 ppm on a 3-minute cycle and 1.8 ppm on a 10-minute cycle, USB charging with automatic shut-off, an ion-exchange purification stage, and a maximum water temperature of 60 degrees Celsius.

Operation is a single button: one press for the short cycle, two for the long one. The glass body needs more care than the Echo bottles’ polymer shells, 380 ml is a small serving, and the seller notes the bottle needs purified water plus regular descaling. Its price tier is a fraction of either Echo bottle’s.

Where the Published Figures Disagree

Most of the conflicting numbers you will find for these bottles trace back to a handful of sources repeating each other. These are the disagreements worth knowing about, with no attempt to settle the ones that cannot be settled from public information:

Point of disagreement	Source A	Source B	Our position
Flask dimensions and weight	Echo: 10 x 3 x 2 in, 455.5 g	Amazon structured spec: 4.06 x 10.16 in, 0.85 kg	Unresolved; Amazon figure may be shipping weight
Go+ body material	Echo comparison table: polycarbonate	Echo documentation: Tritan	Both are Echo’s own claims; we report both
Flask battery capacity	Echo: 2200 mAh	Widely republished: 2000 mAh	Echo’s figure is the only sourced one
Flask 10-minute output	Echo: up to 6.07 mg/L	Widely republished: about 5 ppm	Echo’s figure is the only sourced one
Self-cleaning	Echo: both models have it	Widely republished: Flask only	Echo’s own table settles this – both have it

More generally: every concentration figure on this page is a manufacturer or seller claim. Nobody has published independent titration results for any of these three bottles, and we have not tested them ourselves. Treat any page that presents ppm readings as measured data with appropriate caution, including the tables above.

Making Your Decision: Which Bottle Fits Your Lifestyle?

Best Use Cases for Echo Flask

The Flask is the right choice if you want Echo’s current hardware and the features only it has. It suits:

• Anyone who wants the highest hydrogen figure Echo publishes for a portable bottle
• People who will actually use intake tracking and the app rather than ignoring it
• Buyers who want the model the manufacturer is still supporting and developing
• Desk and home use, where 12 oz and a 20-minute cycle are not inconvenient
• Anyone who would rather buy once at a premium tier than replace a cheaper unit

When the Echo Go+ Still Makes Sense

The Go+ remains a sensible buy from third-party retailers if size matters more to you than features. At 9.5 oz it is genuinely smaller, it carries the same battery and the same warranty, and it costs less than the Flask. The trade is a lower published concentration, no app, no tracking and no cycle control – and the knowledge that Echo has moved on from it.

Who the Glass Bottle Suits

The 380 ml glass bottle sold under the Echo Go name is a different proposition: a much lower price tier, a glass body some people prefer for taste, a 3-minute quick cycle, and a considerably lower quoted hydrogen concentration than either Echo model. It suits someone curious about hydrogen water who does not want to commit at Echo’s price tier, and who is comfortable handling glass. It does not suit anyone who specifically wants an Echo.

Budget: What the Tiers Actually Look Like

The Flask sits at the top of the portable range, the Go+ below it, and the glass bottle far below either. Put against the alternatives – countertop machines in four figures, or hydrogen tablets with a recurring monthly cost – a one-off bottle purchase is the cheapest way into hydrogen water, and the cheapest bottle is not automatically the best value if its published concentration is a fraction of the others.

The most useful thing to remember is that the best hydrogen water bottle is the one you will actually use every day.

FAQ

Conclusion

The Echo Flask is Echo Water’s current portable hydrogen bottle and the only one the company still lists: 12 oz, up to 8 ppm on a 20-minute cycle by Echo’s own rating, PPSU body, app tracking and cycle control, on a 5-year warranty. If you want an Echo bottle, that is the one to buy.

The Echo Go is a name with more history than current meaning. The original is gone from Echo’s catalog, the Go+ that replaced it has been redirected to the Flask, and the product sold under the Echo Go name on Amazon is a 380 ml glass bottle from a different manufacturer at a very different price. Any of the three may suit you – but they are not interchangeable, and the single most useful thing this comparison can tell you is which one you are actually about to buy.