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Oral-B

Oral-B iO Series 9 Toothbrush

$219.27across 10 retailers
Model: iO M9.4A1.1AColor: WhiteUPC: 69055128893
Lowest price
$249.99 at Amazon
Price seen Oct 17, 2026

Where to Buy

Newest price seen: Oct 17, 2026
RetailerPriceLast seenBuy
T
TripleNetPricing.com
$219.27Sep 15, 2026, may have changedBuy Now
Amazon logo
Amazon
30-day returns (in store too)
$249.99Oct 17, 2026Buy Now
Best Buy logo
Best Buy
15-day returns (in store too) · free return shipping · free shipping on $35+
$264.99Sep 15, 2026, may have changedBuy Now
Target logo
Target
90-day returns (in store too) · free return shipping · free shipping on $35+
$264.99Sep 15, 2026, may have changedBuy Now
Walmart logo
Walmart
90-day returns (in store too)
$299.94Sep 15, 2026, may have changedBuy Now

Prices are collected from retailer listings; each row shows the date we last saw that price. Return and shipping terms are each store's standard policy from our retailer research (April 2026 to May 2026). Some products and categories have different terms, so check with the store before you buy.

Price history summary

Lowest new price we recorded at major retailers (Amazon, Walmart, Best Buy, Target, The Home Depot and Lowes) in the last 90 days: $219.94 at Walmart on Sep 15, 2026.

Range over the last 12 months: $149.97 (retailers/amazon, Jul 20, 2026) to $329.94 (retailers/amazon, Jul 24, 2026). The lowest current offer at these retailers, $249.99 at Amazon, is 14% above its 90-day low. Based on 60 recorded prices since Oct 24, 2025 for offers sold by these retailers themselves (not marketplace sellers). Summary as of Oct 23, 2026.

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Pros

  • •Delivers a noticeably good cleaning, leaving teeth feeling fresh and comparable to a professional dental visit.
  • •Features 7 modes, including whitening and sensitive options, catering to various needs.
  • •The interactive display shows progress, timer, and even emoji feedback, encouraging proper brushing.
  • •Bluetooth app integration tracks brushing habits, provides feedback, and helps improve technique.
  • •The whitening setting is effective, with many users noticing teeth become 2 shades whiter within two weeks.
  • •Has a long-lasting battery that can last up to 14 days per charge and requires only a few hours to recharge.
  • •The pressure sensor with light indicators helps protect gums and enamel from excessive force.
  • •Comes with a travel case that charges the toothbrush and provides portability.
  • •Provides a 'fresh-from-the-dentist' clean feeling and removes stains efficiently.
  • •Overall, considered a worthwhile investment for its positive effects on oral health and gum condition.

Cons

  • •The brush head is too large for some, causing difficulty maneuvering and contact with adjacent teeth.
  • •Bristles are soft and grouped in thick bunches, which may reduce cleaning effectiveness and wear out quickly.
  • •Battery issues are common; some users experienced battery failure within a year, needing replacements or repairs.
  • •The app is not particularly helpful for some users, with limited guidance and setup challenges, especially with Wi-Fi.
  • •The toothbrush sprays excessive toothpaste and saliva because of the large head, leading to cleanup messes.
  • •Travel case quality is poor, hard to open, and the charger is specific to the case, which can be inconvenient if lost.
  • •Some users felt the device didn't clean teeth properly after a few months, needing professional cleaning or return to an older model.
  • •No pause button during brushing, requiring restart of the timer if spitting is necessary.
  • •Replacement brush heads are relatively expensive (~$40 for two), raising ongoing costs.
  • •Battery life can be inconsistent; some report rapid battery drain despite proper charging habits.

Bottom Line

The Oral-B iO Series 9 toothbrush definitely packs a punch with its high-tech features, fabulous whitening, and professional-grade clean — but be warned, it’s not without its flaws. The oversized head and soft bristles may not suit everyone, especially those who prefer more precision or firmer cleaning. Battery reliability seems to be a recurring concern, with some users experiencing failures within a year. If you’re tech-savvy and want the ultimate in oral hygiene, this is a solid choice; however, if you’re sensitive about battery longevity or prefer a smaller head, you might want to consider alternatives like the <component-button-product identifierProduct="12345-67890" /> that offers similar cleaning without the Bluetooth app or larger head, or consider switching to a model with a more reliable battery life.

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What Reviewers Are Saying

Praised
good cleaning performance30%
teeth feel cleaner30%
whitening setting is effective10%
Criticized
head is too big30%
sprays toothpaste everywhere10%
bristles are too soft10%
doesn't clean teeth properly20%
battery issues30%
app is not useful20%
expensive investment20%

Discussion

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