Meet The Echo Flask™
Inside every Echo device is special technology that turns normal water into hydrogen-rich water.
At the center is the Echo Hydrogen Generator. It uses two titanium plates coated with platinum and a thin proton exchange membrane between them. These laboratory-grade materials are chosen because they are strong, clean, and safe.
Our carefully shaped plates make sure the electric current spreads evenly, without heat or damage. That means the Echo Hydrogen Generator makes hydrogen faster and more efficiently.
Every part is built from laboratory-grade materials and made to last a long time, so you can always count on clean, high-quality hydrogen water.
🔗 Features, Construction & Specifications
⚠️ IMPORTANT: This User Manual contains links to additional articles that are considered part of the complete guidance for your Echo Flask. Please take the time to read the User Manual in full, including all linked articles, so you have the complete information regarding the proper use, care, cleaning, and maintenance of your Flask.
Following these instructions is important not only for getting the best experience from your Flask, but also for protecting your warranty coverage. Misuse, improper maintenance, or using the Flask in a manner that differs from the instructions and guidelines provided may void applicable warranty coverage.
Important Safety Information
- Do not microwave, refrigerate, or freeze the Echo Flask™
- Do not submerge or place in the dishwasher. The flask screen and/or electrical ports should always remain dry. Water damage will void the warranty.
- Do not operate the Echo Flask without water in the bottle/generator.
- Always operate the Echo Flask on a water-safe surface, as purging from the Flask can occur.
- Always release any built-up pressure before starting a new cycle and again after each completed cycle.
- Do not wiggle, twist, rock, or force the charging cable while it is connected to your Flask. Doing so can loosen or damage the charging port and may also damage the connector on your charging cable. Always insert and remove the cable gently and straight from the port.
⚠️ Contents may be flammable. Keep away from open flames and ignition sources.
🔗 Is Hydrogen Water Flammable or Dangerous?
💧The Flask™ contains a small amount of distilled water to keep the membrane primed. (This water is NOT for consumption.) Please discard this water and fill with purified, filtered, spring, filtered well, RO, or distilled water for best performance
Tip: You may do an internal cleansing to ensure the bottle is fully clean and sanitized. See the Cleaning & Maintenance section below for directions.
⭐️ Please allow your Echo Flask to charge for at least 2.5 hours before initial use.
Your Flask™ is clean and ready to use.
When first using the Flask™, it may take up to one week of regular, consistent use for your Flask™ to build full pressure and produce consistent hydrogen bubbles.
🔗 What if my Echo Flask arrived dry/without water?
🔗 Why does the Flask™ generator need to be wet?
🔗 Understanding your bubble performance and troubleshooting
For the best experience, follow these steps each time you use your Flask™
1. Fill your Flask™
Fill the Flask™ with non-chlorinated water to the top of the shoulder, leaving enough space for proper pressurization and pressure release.
- Never operate the Flask™ dry.
- We recommend purified, filtered, spring, filtered well, RO, or distilled water for best performance. Please avoid chlorinated water sources.
🔗 Why do you recommend filtered water?
2. Secure the cap
Place the cap onto the Flask™, apply gentle downward pressure, and twist until it clicks and locks into place.
- The cap locks every 90 degrees.
- The Echo logo should rest in either a horizontal or vertical position when properly secured.
3. Start your hydrogen cycle
‼️ ALWAYS release the pressure before starting a cycle by pressing the indented circle located on the top of your Flask for 3-5 seconds. This ensures there is no remaining pressure remaining in your Flask prior to beginning a cycle.
Swipe up on the Flask™ display and press the Play button to begin your hydrogen infusion cycle.
4. Once the hydrogen cycle is complete, press and hold the pressure-release dot on the cap for at least 3–5 seconds before attempting to remove the lid.
‼️ If pressure is not properly released, the cap may be difficult to remove or open with a sudden, loud pop due to the remaining internal pressure. Repeatedly opening the Flask™ while it is still pressurized can potentially damage the Flask™ and/or cap, and damage caused by improper pressure release is not covered under warranty.
If the cap still feels difficult to remove, press the pressure-release dot again. Remaining internal pressure can make the cap noticeably more difficult to turn.
You may hear a strong release, a quieter sound, or sometimes very little sound at all. This can vary because the Echo Flask™ automatically manages internal pressure during and after each hydrogen cycle.
- Different pressure-release sounds are normal.
- The amount of sound you hear does not determine or affect the hydrogen concentration (PPM).
🔗 Understanding Pressure, Pressure Release & Different Sounds
5. Remove the cap
After releasing the pressure:
- Grip the sides of the lid (not the top).
- Apply gentle downward pressure to the sides of the cap while avoiding pressing down on the top of the lid.
- Twist counterclockwise, using a motion similar to opening a child-resistant medicine bottle.
🔗 Difficulty Removing Your Echo Flask™ Lid
Echo Flask™ Operating Guides & Troubleshooting
🔗 Understanding Your Echo Flask™ Lid
Step-by-step guidance for removing the lid, pressure management, pressure-release sounds, and troubleshooting.
🔗 How to Use Your Echo Flask™ Screen
Screen operation, display settings, safety information, and troubleshooting.
🔗 Understanding Your Echo Flask™ Generator
Hydrogen bubble performance, generator sounds, water purging or "leaking", LED operation, and troubleshooting.
🔗 Why Does My Echo Flask™ Drip, Leak, or Purge Water?
Moisture or occasional dripping (purging) from the oxygen port can occur during normal operation. This is related to oxygen and moisture being expelled through the generator and does not necessarily indicate a leak. Purging may decrease with continued use, although it can occasionally occur beyond the first several uses.
🔗 Why Does My Echo Flask™ Have Little or No Pressure Release Sound?
Your Echo Flask™ is designed to automatically regulate internal pressure during the hydrogen generation process. As excess pressure is released, the amount remaining at the end of a cycle can vary. This means one cycle may produce a noticeable release sound, another may be very quiet, and another may produce little to no sound at all. These variations can occur from cycle to cycle, Flask to Flask, and even from day to day.
A fully charged Echo Flask™ is designed to provide approximately 60 minutes of hydrogenation time per charge:
- 5–7 cycles when running 10-minute hydrogen cycles
- 2–3 cycles when running 20-minute hydrogen cycles
Actual battery performance can vary somewhat depending on use and charging conditions.
When to charge
Always allow your Echo Flask to charge for at least 2.5 hours before initial use. For optimal battery performance, allow the Flask™ battery to discharge through normal use before recharging. If possible, allow it to reach the point where it can no longer complete a full hydrogen cycle before giving it a full charge.
⚠️ Do not wiggle, twist, rock, or force the charging cable while it is connected to your Flask. Doing so can loosen or damage the charging port and may also damage the connector on your charging cable. Always insert and remove the cable gently and straight from the port.
How to charge
-
Locate the charging port.
The charging port is located under the display screen on the generator. -
Connect the charger.
Plug the USB-C cable into the Flask™ charging port and connect the other end to a compatible 5 V, 2 A charging block. -
Allow the Flask™ to fully charge.
A complete charge can take up to approximately 2.5 hours. The battery display may appear green or show full bars before the battery has completed its full charging period. -
Avoid leaving the Flask™ continuously connected to power.
Once charging is complete, disconnect it rather than leaving it plugged in for extended periods. -
Unplug after charging.
Disconnect the charging cable and store the Flask™ normally until you're ready to use it.
🔗 Echo Flask™ Battery & Charging Guide
For additional battery information, charging instructions, air-travel guidance, and troubleshooting.
🔗 Cleaning & Maintenance of Your Echo Flask™ - Cap care, cleaning agents & frequency, decaling, scrub brush, taste/odors, mildew/mold, FAQ's, and Solutions.
Echo Water App
To download the app, you’ll find it in the Apple App Store or the Google Play Store under "Echo Water."
For a complete overview of the app, including step-by-step instructions, FAQs, and solutions, please visit our App Manual below:
🔗 Echo Flask™ Warranty Coverage - limitations, registration, where to file a claim
Echo Flask Replacement Parts
Some parts of your Echo Flask™ are not covered under the standard warranty, and sometimes you may want extra or replacement parts for convenience. Either way, you can purchase these parts below.
🔗 Gasket
🔗 USB-C Charging Cord (You can use any aftermarket USB-C to USB-C charging cord; it does not have to be an Echo-branded cord.)
🔗 USB-C Charging Block (You can use any aftermarket USB-C charging block; it does not have to be an Echo-branded charging block.)
- 🔗 Return Request
- 3rd Party Returns: Returns must be handled through the retailer where you made your purchase.
- The 3rd-party retailer return policies and timelines will apply and supersede Echo's stated return policy, so we recommend contacting them directly for assistance.
❔Common Customer Questions
🔗 How long to feel the benefits of Hydrogen Water?
🔗 Why am I experiencing unexpected symptoms after starting Hydrogen Water?
🔗 What sets your Flask apart from others?
🔗 Why is the Echo Flask made of plastic?
Need Help? We’ve Got You Covered
If you have a question, need assistance, or something doesn’t seem quite right, our team is here to help via live chat between 9 AM and 5 PM MST, Monday through Friday.
🔗 Echo Water Support: You've got Questions, We've Got Answers!
Hydrogen Water Overview
🔗 Hydrogen Water Storage | How to Store, How Long Does Hydrogen Last After a Cycle, Can it be put in a different container other than my Flask
🔗 Guidelines for Using Hydrogen Water with Cold Water, Heat, and Additives
We value your feedback, which helps us improve our service. We’d love to hear about your experience with the Echo Flask™!
Note: If you’re experiencing an issue, please contact our support team directly. The review section is not connected to our support system, and we want to ensure we address your concerns promptly.
We believe you deserve to know exactly what’s going on inside the bottle you use every day. That’s why the Echo Flask™ has been independently tested by certified third-party laboratories—because trust shouldn’t require blind faith.
The Echo Flask™ has undergone rigorous evaluation by H2 Analytics and SilverState Analytical Laboratories to verify both safety and performance.
These independent tests confirm that the Echo Flask™:
Does not produce heavy metal byproducts
Meets strict safety and performance standards
Generates hydrogen cleanly and safely
We don’t just say it—we back it up.
*Full laboratory reports are available in the attachments section below
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