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In this guide
The WP-580 is the flosser Waterpik puts at the top of its cordless range, now labeled Cordless Advanced 2.0. It is a handheld pump with a snap-on reservoir, three pressure levels, a tip that rotates through 360 degrees, and a sealed body that can be used in the shower. Waterpik lists it at $99.99 in white, ships it with four tips, a microfiber travel bag and a plug that stops the reservoir leaking in luggage, and charges it through a magnetic puck on a USB-A lead.
The number that frames every other decision is 45 seconds. That is how long the 7-ounce reservoir lasts at full flow, and Waterpik's own countertop Aquarius, at the same MSRP, holds 22 ounces and runs for 90 seconds or more. So the question is not whether the WP-580 cleans well; it uses the same pulsing jet technology. It is whether you need a flosser that lives in a shower caddy or a suitcase badly enough to accept a smaller tank and a battery.
Our verdict
A capable cordless flosser whose price only makes sense if the cordless part is doing real work: a small bathroom, a shower routine, or a suitcase. At a desk-side sink the Aquarius gives more for the same $99.99.
- A good fit for
- Someone with braces, implants or bridgework who flosses in the shower or travels often and wants a full-pressure handheld with the specialty tips in the box.
- We would skip it if
- You floss at a sink with an outlet nearby and have no plans to travel with it; a 45-second reservoir means refilling mid-mouth for most adults.
Reasons to consider it
- Three pressure settings and 1,250 pulses per minute, with Orthodontic and Plaque Seeker tips included
- Waterproof housing rated for shower use, with a travel bag and a leak plug for the reservoir
- Magnetic charging from any 5 V USB-A source and a claimed four weeks per charge
The compromises
- The 7-ounce reservoir runs dry in about 45 seconds; a full clean usually takes two fills
- No wall adapter in the box, and Waterpik's own FAQ quotes an 8-hour charge against the 4-hour headline
- The battery is not user-replaceable, so the unit's life is the cell's life
What we have not verified: This article works from Waterpik's product listing, FAQ, warranty and returns pages. Actual pressure at the tip, battery life after a year, and how quiet the pump really is were not measured.
The things in this guide
A closer look at the products, who they may suit, and what to check before buying.

Cordless Advanced 2.0 Water Flosser · WP-580, White
Waterproof, 0.8 pounds, three pressure levels, a leak plug for travel and a magnetic charger that runs from a laptop or power bank. The Orthodontic and Plaque Seeker tips are in the box, which matters for braces and implants.
Before you buy: A 45-second reservoir, no wall adapter, and a sealed battery. If it never leaves the sink, the countertop Aquarius does more for the same money.
Price checked September 11, 2026. Retailer prices can change.Three settings, four tips, and a tank that empties in 45 seconds
Waterpik rates the WP-580 at 1,250 pulses per minute with a flow of 10 ounces per minute, split across three pressure levels chosen by a mode button on the handle. Four tips come in the box: two Classic jet tips (JT-450E), an Orthodontic tip (OD-100E) with a small brush at the end for wires and brackets, and a Plaque Seeker tip (PS-100E) meant for implants, crowns and bridges. Waterpik attaches a clinical claim to every tip, and the plain takeaway is simpler: if a dentist has told you to clean around hardware, the tip for it is already included.
The reservoir holds 7 ounces, or 207 milliliters, and Waterpik puts its run time at 45 seconds. Do the arithmetic against the flow figure and it checks out; 10 ounces a minute drains 7 ounces in 42 seconds. The countertop Aquarius holds 22 ounces and runs 90 seconds or more with ten pressure settings and a 1,400-pulse motor. Anyone with a full set of teeth who follows Waterpik's own method of tracing the gumline will be refilling the WP-580 at least once per session. That is the tax on going cordless, and it is the same tax the entire cordless category pays.
A magnetic puck, no adapter, and two different charge times
Charging is the interesting engineering choice. The handle has no exposed socket; a magnetic puck snaps to the front above the logo and a USB-A lead runs from it to whatever 5-volt, 1-amp source you have. Waterpik lists a laptop, a car port, a power bank or a wall adapter, and then notes that the wall adapter is not in the box. Global voltage compatibility follows from that: the flosser never sees mains power, only 5 volts from the source you bring. The battery is lithium ion at 4.86 watt-hours, and Waterpik lists it as not replaceable.
The headline feature is a 4-hour rapid charge, and the same page's FAQ tells owners to charge for about 8 hours. One figure is likely a carry-over from the earlier WP-560 generation, which shared the reservoir and charging design, but Waterpik does not say which. Either figure gives a claimed run of up to four weeks between charges, with an indicator that blinks three times when the cell is at roughly 30 percent. Budget a full night on the puck and neither figure will disappoint you.
Waterproof, 0.8 pounds, and built to leave the bathroom
With a tip fitted the unit stands 11.6 inches high on a base 2.8 by 4 inches at a weight of 0.80 pounds. Waterpik lists it as waterproof and usable in the shower, which is where a cordless flosser makes the most sense: the mess goes down the drain and the reservoir refills from the showerhead. Waterpik calls the pump ultra quiet, a claim it makes for this model and not for the cheaper cordless units, though it publishes no decibel figure.
For travel there is a microfiber bag in the box, a tip storage case and a plug that seals the reservoir so residual water stays put in a suitcase. One line in the specs deserves a second look: travel mode, the lockout that stops the button firing in a bag, is listed as No on the WP-580 and as Yes on the $69.99 Cordless Plus 5000. That cheaper model also claims nine weeks per charge and a 60-second reservoir, but drops to two pressure settings and three tips, and weighs 0.67 pounds. If you never need the middle pressure step or the specialty tips, it is the more sensible suitcase flosser.
Twenty-four months of cover, 30 calendar days to return, and the brush question
Coverage on the WP-580 runs 24 months, against 36 months on the countertop Aquarius. Waterpik's claim page covers the same failures across its range, and they are the ones that matter on a handheld: a unit that will not power on, a cell that will not hold a charge, leaks from the reservoir, and lost pressure. The remedy is replacement after troubleshooting with customer service, and a receipt or the serial-number date is required. Tips are consumables and are excluded, units bought secondhand are excluded, and opening the case voids everything, which matters on a sealed unit with a non-replaceable battery.
Returns are separate from warranty. Waterpik accepts water flosser returns for 30 calendar days with an itemized receipt, offers no exchanges, and, for orders from its own online store, has the customer pay return shipping and deducts the original shipping from the refund. Anyone comparing this with a Sonicare 1100 toothbrush at $19.96 is comparing two jobs, not two products: the brush cleans tooth surfaces, the flosser flushes the spaces between them and under the gumline. Waterpik's own literature positions the flosser as a replacement for string floss, not for brushing, and neither listing suggests otherwise.
Skip it if the flosser never leaves the sink
Buy the Aquarius instead if your flosser will sit beside a bathroom sink with an outlet. For the same $99.99 you get ten pressure levels, a 22-ounce reservoir that lasts a whole session, seven tips, a timer and pacer, and a year more coverage. The WP-580 wins on nothing in that setting except footprint, and a 4-inch-deep base is not a large saving on a counter that already holds a toothbrush charger.
Pass on it as well if a 45-second tank sounds like a chore, because it will be one twice a day. And if the cordless part is really about travel, look hard at the Cordless Plus 5000 at $69.99: it has the travel lockout this model lacks, a longer reservoir, and a longer battery claim. The WP-580 earns the extra $30 only when you want three pressure steps, the quieter pump, and the Orthodontic and Plaque Seeker tips in the box from day one.
How we put this together
Built from the product pages and listings below, without test scores or results we have not measured. Specifications and prices change, so check the original page for the exact model, current price, delivery, and returns.
- Waterpik: WP-580 Cordless Advanced 2.0 Water Flosser (opens in a new tab)
- Waterpik: Cordless water flosser range (opens in a new tab)
- Waterpik: WP-660 Aquarius Water Flosser (opens in a new tab)
- Waterpik: WF-26W010 Cordless Plus 5000 Water Flosser (opens in a new tab)
- Waterpik: Warranty claim process (opens in a new tab)
- Waterpik: Water flosser returns and refunds (opens in a new tab)
- Philips: Sonicare 1100 Series (opens in a new tab)


