Amazon has cut the Waterpik Cordless Pulse 3100 water flosser to $29.99, down $20 from its $49.99 list price.
That is 40% off, and it exactly matches the all-time low set during Black Friday 2025. The price had not reappeared until now. The markdown also starts ahead of Amazon's Black Friday Week sale, so shoppers get the low number without waiting for the event.
The Pulse 3100 is a basic model: two pressure settings and two tips, one standard flossing tip and one tongue cleaner. Its selling points are the battery, which the company says lasts up to nine weeks, and the noise level. A product-testing site that put it through extensive testing named it the quietest water flosser available. The water reservoir is dishwasher-safe on the top rack.
Who should care? Experts consulted by that site said water flossers suit people with braces, crowns, or sensitive gums. The long battery and low noise also make this one easy to pack for travel.
The timing is the useful part. A price that matches last year's best, and shows up before the sale officially opens, is a reasonable signal that waiting buys little. It does not prove the price can't go lower. Amazon has also tagged the listing "selling fast", a badge that says nothing specific about remaining stock.
The real question is whether the feature list fits your needs. With only two pressure settings, this is a simple tool, and at $29.99 that simplicity is the whole pitch.