Description
Overview
The Echo Flask is a portable, rechargeable bottle from Echo Water that dissolves hydrogen gas (H2) into drinking water. A generator in the base uses electrolysis: a proton exchange membrane (PEM) between platinum-coated titanium plates passes hydrogen into the water, while the oxygen produced is vented out through a port in the base. Echo states that the electrode plates do not touch the drinking water.
The bottle holds 12 oz (354 ml). Echo states up to 6 ppm of dissolved hydrogen after a 10-minute cycle and up to 8 ppm after a 20-minute cycle, citing third-party testing by H2 Analytics. Cycles are started from a touchscreen on the side of the bottle or from the Echo Water app over Bluetooth, which logs water intake, hydrogen intake and completed cycles.
Key features
- PEM hydrogen generator with platinum-coated titanium electrode plates and an oxygen vent port in the base
- Up to 6 ppm after a 10-minute cycle or up to 8 ppm after a 20-minute cycle, as stated by Echo
- Touchscreen display; cycles can be scheduled, paused, shortened or stopped
- Pairs with the Echo Water app (iOS and Android) to track water intake, hydrogen intake and cycles, with Apple Health and Android Health integration
- Locking twist cap with a pressure-release button, and a built-in Clean Flask cycle
- PPSU water-contact surfaces (Echo states BPA-, BPS- and PFAS-free) in a TPU outer housing
Specifications
| Brand | Echo Water (Echo Technologies LLC) |
|---|---|
| Model | Echo Flask Hydrogen Water Bottle |
| Type | Portable hydrogen water bottle (PEM electrolysis) |
| Capacity | 12 oz (354 ml) |
| Hydrogen level (maker-stated) | Up to 6 ppm (10-minute cycle); up to 8 ppm (20-minute cycle) |
| Cycle time | 10 minutes by default; up to 20 minutes |
| Internal pressure | Up to 60 PSI (10-minute cycle); up to 77 PSI (20-minute cycle) |
| Generator | Nafion proton exchange membrane, platinum-coated titanium electrode plates, oxygen vent port |
| Materials | PPSU (polyphenylsulfone) water-contact surfaces; TPU (thermoplastic urethane) outer housing |
| Display | Touchscreen LCD, 2.8 x 1.4 in (71 x 36 mm), dark and light modes |
| Connectivity | Bluetooth; Echo Water app for iOS and Android; Apple Health and Android Health |
| Battery | Built-in rechargeable lithium-ion |
| Charging | USB-C; up to 2.5 hours from empty |
| Runtime per charge | About 60 minutes of hydrogen generation (5–7 ten-minute cycles) |
| Dimensions | 10 x 3 x 2 in (258 x 76 x 48 mm) |
| Weight | 1 lb (455.5 g) empty; 1.8 lb full |
| Testing and certification | H2 Analytics certified (registration 24-0701-1-PB); battery CE, FCC and KC certified |
| Made in | Philippines |
| Warranty | 5-year limited warranty (Echo terms; battery excluded) |
| Care | Hand wash only; not dishwasher safe; do not submerge |
What’s in the box
- Echo Flask
- USB-C charging cable
- USB charging block (Echo includes it with US orders and notes it may not be included with international orders)
- Quick Start Guide
Good for
- Making hydrogen water from filtered, RO or distilled water without a plumbed-in machine
- Carrying a refillable bottle to work, the gym or on trips
- Logging daily water intake and hydrogen cycles in the Echo Water app
- Desk or bedside use, charged over USB-C
Things to consider
- Use plain water only: Echo recommends filtered, RO or distilled water, advises against chlorinated water, and says not to add supplements, powders or flavourings to the bottle.
- Hand wash only: do not put it in the dishwasher, submerge it, microwave, refrigerate or freeze it. Echo recommends weekly cleaning plus a white-vinegar descale, weekly to monthly depending on the water used.
- Release the pressure with the button on the cap before and after each cycle. Echo warns the contents may be flammable, so keep it away from open flames, and notes that small drips from the oxygen port are normal, so stand it on a water-safe surface.
- Echo classes the lithium-ion battery as a consumable part that is not covered by the 5-year limited warranty; app and firmware issues are also excluded. Echo advises charging for at least 2.5 hours before first use.
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