Description

The Echo Flask is a rechargeable 12 oz (354 ml) bottle that dissolves hydrogen gas into your drinking water. We list it in our hydration section; Echo makes no pain claims for it, and neither do we. If you are curious about hydrogen water, here are the facts Echo gives.

How it works

A generator in the base uses electrolysis. A Nafion proton exchange membrane (PEM) sits between platinum-coated titanium plates; hydrogen passes into the water and the oxygen produced is vented through a port in the base. Echo states the plates do not touch the drinking water. Citing third-party testing by H2 Analytics, Echo states up to 6 ppm of dissolved hydrogen after a 10-minute cycle and up to 8 ppm after a 20-minute cycle.

Controls and tracking

Start, schedule, pause, shorten or stop cycles on a small touchscreen on the side, or in the Echo Water app over Bluetooth. The app logs water intake, hydrogen intake and cycles, and connects to Apple Health and Android Health.

Specs

Size and weight	10 × 3 × 2 in; 1 lb empty, 1.8 lb full
Materials	PPSU water-contact surfaces (Echo states BPA-, BPS- and PFAS-free), TPU housing
Battery	USB-C, up to 2.5 h to charge; about 60 min of generation (5–7 ten-minute cycles)
Pressure	Up to 60 PSI (10 min) or 77 PSI (20 min)
Warranty	5-year limited; battery, app and firmware excluded

Rules Echo sets

Plain water only: filtered, RO or distilled. No chlorinated water, supplements, powders or flavorings.
Press the pressure-release button on the cap before and after each cycle.
Echo warns the contents may be flammable; keep it away from open flames.
Hand wash only. No dishwasher, submerging, microwave, fridge or freezer. Clean weekly and descale with white vinegar weekly to monthly.
Small drips from the oxygen port are normal, so stand it on a water-safe surface.
Charge for at least 2.5 hours before first use.

The box holds the flask, USB-C cable, Quick Start Guide and, for US orders, a charging block. Made in the Philippines. Staying hydrated is good general advice, but no bottle replaces care from your doctor for ongoing pain. The free Pain Check-Up can help you think about what your body needs, and the wellness and lifestyle groups talk daily habits.

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Additional information

Capacity	12 ounces (0.36 liters)
Hydrogen output	Up to 6 ppm on a 10-minute cycle; up to 8 ppm on a 20-minute cycle
Height	10 inches (258 mm)
Width	3 inches (76 mm)
Depth	2 inches (48 mm)
Weight (empty)	1 lb (455.5 g)
Weight (full)	1.8 lbs
Pressure	Up to 60 PSI
Battery	Built-in rechargeable lithium-ion; up to 7 cycles per charge
Touch screen LCD	2.8 inches (71 mm) wide × 1.4 inches (36 mm) high; dark and light modes