WP-440 Cordless Professional Water Flosser

WP-440 is rated 4.3 out of 5 by 120.
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MSRP $69.99

The Waterpik® Cordless Professional Water Flosser is a great solution when you want the convenience of cordless water flossing. Rechargeable and portable, it's perfect for use in smaller bathrooms or for travel.

The Cordless Professional's advanced dual water pressure control system allows you to personalize your water pressure intensity. Featuring an ergonomic design, the Cordless Professional includes rechargeable batteries and an easy-to-fill reservoir.

To meet your tooth brushing needs, the Cordless Professional comes with a Nano-Sonic® Toothbrush. Its vibrating bristles break up plaque, and the high-low bristle pattern accesses plaque in hard-to-reach areas.

Waterpik® Water Flossers are clinically proven to be more effective than traditional dental floss and Sonicare® Air Floss (Model HX8181) for reducing plaque, gingivitis, and gum disease. And it's perfect for anyone with braces or implants, and those with crowns, bridges, and veneers.

Product Benefits

  • Effective Plaque Removal: Clinically Proven to remove up to 99.9% of plaque from treated areas in 3 seconds
  • Healthier Gums: Clinically proven up to 50% more effective than traditional dental floss
  • Ideal for Implants: Clinically proven up to 2X as effective for improving gum health around implants vs. string floss using the Plaque Seeker® tip
  • Essential for Braces: Clinically proven up to 3X as effective for removing plaque around braces vs. string floss using the orthodontic tip
  • Removes plaque and debris deep between teeth and below the gumline where brushing and traditional flossing can't reach
  • Massages and stimulates gums to enhance circulation and keep your gums healthy
  • Leaves your mouth feeling incredibly fresh and clean
  • Great for people with implants, and those with crowns, bridges, and veneers
  • Healthier Gums in just 14 Days Guaranteed

Product Features

  • 4 Tips
  • In handle Dual-Pressure Control
  • Reservoir Capacity of 45+ seconds
  • 360-degree tip rotation
  • Perfect For Travel
  • NanoSonic® Toothbrush Included
  • Compatible With 120VAC/60Hz Outlets, For Use In North America Only
  • Two-year warranty

Product Manuals

Water Flosser Features

  • Pressure Range: 45 to 75 PSI (3.160 to 5.270 Kg/cm2)
  • Flow Rate per Minute: 10 Ounces (300 mL)
  • Pulses per Minute: 1450
  • Number of Pressure Settings: 2
  • Included Flosser Tips: 4
  • Timer/Pacer: No
  • Massage Mode: No
  • LED Function Indicator: No


  • Capacity: 7 Ounces (210 mL)
  • Capacity in Seconds: 45
  • Covered: Yes

Size and Weight

  • Height (with Tip/Brush): 11.65 Inches (29.59 cm)
  • Max Width (Base): 2.74 Inches (6.95 cm)
  • Max Depth (Base): 3.80 Inches (9.65 cm)
  • Unit Weight: 0.74 Lbs (0.337 kg)
  • Shipping Weight: 1.36 Lbs (0.620 kg)

Power and Warranty

  • Voltage: North America only; 120VAC/60Hz
  • Warranty: 24 Months


  • Rechargeable: Yes
  • Replaceable: No
  • Type: NiMH
  • LED Charging Indicator: No

Toothbrush Features

  • Included Brush Heads: 1
  • Water Resistant Toothbrush: Yes
  • Number of Speeds: 1
  • Strokes Per Minute: 16000

Included With Unit

  • 1 - OD-100E - Waterpik® Orthodontic Tip
  • 1 - PS-100E - Waterpik® Plaque Seeker® Tip
  • 2 - JT-450E - Waterpik® Classic High-Pressure Jet Tip
  • 1 - TRANS_WP-450 - 2-Prong Charger for Cordless Water Flossers

Available For Unit

  • PP-100E - Waterpik® Pik Pocket Tip
  • TB-100E - Waterpik® Water Flosser Toothbrush Tip
  • TC-100E - Waterpik® Water Flosser Tongue Cleaner
  • TP-450 - Cordless Water Flosser Travel Case
  • TS-100E - Water Flosser Tip Storage Case - with 6 Tips
Rated 4 out of 5 by from Very Useful Better and faster than flossing. Would have liked a choice of tips. (For example, the orthodontic tip is useless for me.) Note : You may have to fill the trough twice. Would also to see a third pulse strength setting.
Date published: 2016-05-25
Rated 4 out of 5 by from Great features Bought this for traveling. The other one I have is too large to travel, so this is the perfect size.
Date published: 2016-05-23
Rated 5 out of 5 by from Dentist recommended It does exactly what needed. Easy to use and charge.
Date published: 2016-05-23
Rated 5 out of 5 by from AWESOME!!!!!! So easy to use & super effective. Traditional floss is difficult for me. There's no space between my teeth. The floss just shredded & sometimes would cut my gums because of the force I had to use. Not anymore!!!! I love this product SO much!!
Date published: 2016-05-21
Rated 5 out of 5 by from So Easy To Use I have had a Waterpik in the past, and I wanted the new model. This is so handy to use, comfortable grip, and has plenty of water capacity. Waterpik is also recommended by my dentist.
Date published: 2016-05-20
Rated 3 out of 5 by from Good for Hand Held Device The Waterpik is light and just right for traveling, not too big.
Date published: 2016-05-20
Rated 5 out of 5 by from Love it I have always considered flossing an irritating waste of time, probably because I can't seem to use dental floss very well -- even the floss in those little 'y' holders. I have used the Waterpik for 4 days now. The first couple of days, I used it only once. The third day, I used it after 2 meals. The fourth day I used it after every meal because I couldn't stand the way food felt between my teeth. It's amazing how quickly you can become accustomed to really clean teeth.
Date published: 2016-05-20
Rated 4 out of 5 by from Love the portability I enjoy the portability of this Waterpik. It's not as versatile as my old one, but it's more convenient and easier to clean.
Date published: 2016-04-26
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CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.

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