Mason Genie MG1 (Black)

Mason Genie MG1 (Black)

By Mason Genie · Vacuum Sealers · Kitchen & Cooking

  • 10 chalkboard lids included (5 regular, 5 wide mouth)
  • oxygen removal 57-59 percent in auto mode
  • 81 percent oxygen removal with manual pumping
  • USB-C rechargeable battery
  • 60-day money back guarantee

Lowest price seen
~$49.99 (approx.)
from $49.99 at Amazon

Prices are snapshots. Check the current price with the store.

Summary

A cordless, one-touch vacuum sealer that sits on regular- and wide-mouth mason jars and pulls a seal in a claimed 30–60 seconds, aimed at households that already store dry goods in jars. Check the durability record before you buy: no independent test exists, and owners report units that stop working after as few as three uses.

Strengths

  • One-touch operation is simple and fast: set the device on the jar, press the button, wait.
  • It works with mason jars you already own and standard canning lids, so there are no proprietary consumables.
  • Owners report sealing 20–30 jars in one session and berries and stone fruit lasting 3+ weeks.
  • Jars open and reseal repeatedly, which bag-based sealers cannot do.
  • Compact and cordless; it fits in a drawer and charges from USB-C.
  • The kit includes 10 reusable chalkboard lids and a lid adaptor for the other jar size.

Weaknesses

  • The unit often sticks to the jar after the cycle and needs waiting or careful prying to release.
  • Owners report jars losing vacuum within days, even with new Ball lids.
  • Units are reported to stop working entirely anywhere from 3 uses to 1.5 years.
  • Batteries are reported to stop holding charge within 6–18 months; one owner said a unit died after about 10 uses.
  • The 60-day guarantee demands video proof of the defect, and some owners say refunds were refused without it.
  • Wirecutter excludes handheld jar sealers from its tests, saying they “have less vacuum strength and don’t seal as securely” as full-size picks.

Verified specifications

Operationone-touch automatic vacuum and seal; no manual mode documented.
Seal time30–60 seconds, a manufacturer claim.
Air removal99% claimed; no independent laboratory verification.
Oxygen comparison“under 0.5% oxygen” versus “2–5%” for cheap copycats, per the brand.
Jar compatibilitystandard regular- and wide-mouth mason jars (Ball, Kerr, store brand); no proprietary jars needed.
Lidsstandard metal canning lids and the included chalkboard-top lids both work.
BatteryUSB-C rechargeable; over 200 sealing cycles per charge claimed; can be used while charging.
Safetynot a water-bath or pressure canner; dry goods and shelf-stable items only.
Dimensions4 × 3.75 × 3.75 in (10.2 × 9.5 × 9.5 cm); 1.06 lb (480 g).
In the boxsealer unit, lid adaptor, 5 regular-mouth chalkboard lids, 5 wide-mouth chalkboard lids, USB charger, keychain lid opener.
Warranty60-day money-back guarantee; refunds require video proof of the defect.
Full research notes and sources

How it seals

Place a canning lid or one of the included chalkboard lids on the jar, set the sealer on top, and press the single button. The device pulls air out in a claimed 30–60 seconds and leaves a gasket seal you break by hand, take what you need, and reseal. The lid adaptor bridges regular- and wide-mouth jars; the base unit alone works on wide-mouth only, so regular-mouth users need the adaptor or the full kit. Owners who seal in batches report 30 jars in a sitting, with rice, oats, flour, coffee and nuts staying fresh for weeks; one Permies user reported bean sprouts fresh past 7 days. What the device does not do is make perishable food shelf-stable: it is not a canner, and r/Canning threads repeat that it cannot replace water-bath or pressure processing. The same threads warn against fine powders such as flour or cornmeal — the suction pulls them into the device.

The durability question

Complaints across Trustpilot, r/Canning and Permies cluster around four failures. Sticking: the unit does not release from the jar right after sealing. Seal loss: jars lose vacuum within days, even with new Ball lids. Battery fade: units stop holding charge within 6–18 months. Outright death: units that stop working entirely, reported from 3 uses up to 1.5 years. These are voluntary review-pool signals, not a measured failure rate — nobody has published one — but the pattern repeats across three separate pools. The refund path adds friction: the 60-day guarantee requires video documentation of the defect, and some owners report denials when they could not or would not provide it. The brand’s site also runs countdown timers and multi-kit upsells that multiple reviewers describe as high-pressure.

Running costs and parts

There are no bag rolls or proprietary pouches. Standard canning lids are reusable many times, and the kit’s 10 chalkboard lids are the main consumable — replacements run $12.99–$14.99 for a 12-pack at masongenie.com, and a spare lid adaptor is $17.99. Charging is USB-C, so there is no charger to replace. The brand sells the base unit alone and in multi-kit bundles — two kits at $44.99 each, three at $42.49 each — but the base unit alone works only on wide-mouth jars.

Is it worth it?

For a household that already stores dry goods in mason jars, the kit lists at $49.99 and the base unit at $59.99 on masongenie.com (October 2026). At the kit price it is a plausible convenience purchase: one-touch operation, jars you already own, a 60-day window to test it, and no consumables beyond lids. At the base-unit price the value gets thinner — you pay more for less capability, with no independent test data behind you. Above $60, full-size bag sealers from Anova, Nesco and FoodSaver become viable: they have years of owner history and independent test coverage, though they seal bags rather than jars. Owners also report generic clones at $14–30 performing comparably, with no warranty channel behind them. The MG1 fills a narrow niche — cordless, one-touch, jar-based sealing — and its long-term reliability stays an open question that owner pools answer with more warnings than reassurances.

Which model this is

This page covers the Mason Genie MG1 in black, the cordless jar sealer the brand sells as its original base unit. The manufacturer’s own pages call it simply “Mason Genie Vacuum Sealer” — the MG1 designation appears in the Amazon listing, whose ASIN is B0DDB8CCJ3. Do not confuse it with the Vacuum Genie bag sealer or the Genie Dehydrator, which are different products. The brand says it sells only through its own website and that all Amazon listings are unauthorized third-party copies; that is a brand claim, not an independently verified fact.

Sources

Manufacturer:

Independent reviews:

Owner reports:

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