Main Content
product image

Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White

Rating 4.5 out of 5 stars with 51 reviews

$249.99

Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White

Model: HX3921/40
SKU: 6483389
$249.99
or
Finance OptionsView your offers
Accidental Geek Squad Protection
96% of reviewers would recommend
Warranty Protection Plans
Sold by Best Buy

About This Item

Discover the power of X! The new Philips Sonicare Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Because of Quad-Stream technology, Philips Sonicare Power Flosser enables you to improve your gum health by 50% in just 1 minute per day!
  • Key Specs
    • Number of Tips Included: 3
    • Reservoir Capacity: 20.28 ounces
  • General
    • Brand: Philips Sonicare
    • Model Number: HX3921/40
    • Product Name: Power Flosser & Toothbrush System 7000, HX3921
    • Color: White
  • Dimensions
    • Product Width: 7.5 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Height: 10.6299 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Length: 8.653 inches (The out of box length of the item. Length is measured as the longest dimension of the item.)
    • Product Weight: 3.27 pounds (The out of box weight of the item.)
  • Features
    • Tip Type(s): Standard jet tip
    • Number of Tips Included: 3
    • Reservoir Capacity: 20.28 ounces
  • Power
    • Power Source: Battery-powered
    • Battery Size: Not Applicable (The battery size required for operation.)
    • Number of Batteries Required: 1
    • Batteries Included: true (Indicates whether the product comes with the required batteries for its operation.)
  • Warranty
    • Warranty - Parts: 24 Months
    • Warranty - Labor: 24 Months
  • Other
    • UPC: 075020091178

Discover the power of X! The new Philips Sonicare Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Because of Quad-Stream technology, Philips Sonicare Power Flosser enables you to improve your gum health by 50% in just 1 minute per day!

  • More Effective Than Floss: Up to 270% more effective than manual toothbrush and floss for healthier gums.
Whats Included
  • 1 Power Flosser, 3 Nozzles, 1 Nozzle case, 1 Power Toothbrush, 1 Brush Head, 1 Toothbrush Travel Charger, 1 Toothbrush Travel Case

Q: What makes the Quad Stream Tip special?

A: The Quad Stream Tip creates four streams of water to effectively clean between teeth and along the gum line.

Q: What is the reservoir capacity of this power flosser?

A: The reservoir has a capacity of 20.28 ounces.

Q: How many flossing modes does the Philips Sonicare Power Flosser have?

A: The Philips Sonicare Power Flosser has 4 flossing modes.

Q: What is the design philosophy behind this power flosser?

A: It is designed to be quiet so as to not disturb others.

Q: What type of battery is used in this power flosser?

A: This power flosser uses a Lithium-ion battery.

Q: Does this power flosser come with a warranty?

A: Yes, it comes with a 24 month warranty on both parts and labor.

Q: Is this Philips Sonicare more effective than manual flossing?

A: Yes, it is up to 270% more effective than manual flossing.

Q: What is the pressure force it has?

A: Hi there! The Philips Sonicare - Power Flosser 7000 (HX3921/40) delivers water pressure in a range of ~ 45-75 PSI (3.16-5.27 kg/cm²). You can adjust intensity - it offers 10 different water-pressure levels—so you can pick the setting that feels comfortable while still getting an effective clean.

Sponsored

Reviews

Customers are saying

Customers praise the Power Flosser & Toothbrush System 7000, HX3921 for its multiple cleaning modes and intensity levels, long battery life, ease of use, and overall design. The water pressure is adequate for most, and the SoniCare app is comparable to the Oral-B app. However, some customers have expressed concern over the fact that only one brush head is provided with the system.

This summary was generated by AI based on customer reviews.

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

Compare similar products

Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
4.5(51)

Discover the power of X! The new Philips Sonicare Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Because of Quad-Stream technology, Philips Sonicare Power Flosser enables you to improve your gum health by 50% in just 1 minute per day!

Philips Sonicare - Power Flosser 3000 - White

The new Philips Sonicare Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Because of Quad-Steam technology, Philips Sonicare Power Flosser enables you to improve your gum health by 50% in just 1 minute per day!

Waterpik - Sensonic Complete Care, Water Flosser and Sonic Electric Toothbrush Combo, ADA Accepted - White

Take control of your oral care with the Waterpik Sensonic Complete Care water flosser + electric toothbrush. With advanced features and an intuitive design, this innovative oral care system provides exceptional results, in a compact device that uses just one outlet. Designed to help provide maximum plaque removal and optimal gum health, Waterpik Sensonic Complete Care is ideal for anyone looking for a custom flossing and brushing solution. The advanced Waterpik water flosser features 10 safe and effective pressure settings and a variety of specialty tips for specific dental needs, including maintaining implants, braces, and dental work. The rechargeable Sensonic electric toothbrush offers 3 brushing modes to personalize your experience: Clean, Stain Removal, and Gum Care. The Clean mode offers everyday cleaning performance, while the Stain Removal mode targets surface stains. The Gum Care mode gently enhances gum stimulation for a healthier smile. The advanced Sensonic brush head features ADA-compliant soft bristles that are contoured to hug the natural shape of your teeth, making it easier to clean hard-to-reach areas, even back teeth. Combined with advanced sonic technology, Waterpik Sensonic removes plaque bacteria with minimal effort. Waterpik brand products are tested and trusted. For more than 60 years, Waterpik has been designing and engineering clinically proven products that deliver superior oral care and is the #1 water flosser brand recommended by dental professionals.

Philips Sonicare - Compact Flosser 1000 - Blue
4.5(2)

Achieve optimal dental hygiene and oral care with the Philips Sonicare Compact Flosser 1000. This electric water flosser is designed to remove up to 99.9% of plaque¹ from between your teeth and along your gumline in just 60 seconds. Access hard-to-reach areas with two nozzles that rotate 360 degrees, so that you can use the device in any orientation and reach any corner of your mouth. The N1 Standard nozzle provides a powerful clean between teeth, while the N2 Comfort nozzle with a soft tip has been designed for sensitive gums. This ergonomic, portable water flosser fits comfortably in your hand, and also in your bag. Its lightweight and compact design makes it easy to maneuver and very handy for travel. When you purchase this product, you receive one blue Philips water flosser, equipped with the 15-second pacer and three water flossing modes (Pulse, Clean, and Sensitive) to cater to your unique needs. With a slim cordless design and a 14-day battery life, it ensures convenience and flexibility for your oral care routine. This water flosser has an IPX7 water-resistance rating, making it truly bathroom friendly. This Sonicare water flosser has a collapsible reservoir, making it easy to put away or pack on your next trip. The reservoir holds up to 200ml of water, enough for one complete 60-second clean. You can fill the water reservoir easily in two ways. Either remove the reservoir and fill it up like a glass. Or top it up using the filling port near the nozzle attachment. The filling port also doubles up as a place to store your nozzle when the flosser is not in use¹ in an in-vitro study. Actual results may vary.

Pros for Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
Cleaning, Water Pressure, Battery Life, Ease of use, IntensityThere were no pros for this productThere were no pros for this productThere were no pros for this product
Cons for Philips Sonicare - Power Flosser & Toothbrush System 7000, HX3921 - White
Brush HeadThere were no cons for this productThere were no cons for this productThere were no cons for this product

Specs

No content
Sponsored

Similar products from outside of Best Buy

sponsored

Finance Options

My Best Buy® Credit Card
10% back in rewardson your first day of purchases when approved for the My Best Buy® Credit Card.
Buy Now, Pay Later
4 payments starting at $62.50
Lease to own
Apply today with no credit needed and enjoy flexible payment options.