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Product A
Product B
| Side by side |  |  |
|---|---|---|
| Buyer rating | 4.6 | 4.4 |
| Price | $59.99 | $35.99 |
| Our score | 8.3/10 | 8.0/10 |
| Buyer ratings | 158,068 ratings | 53,739 ratings |
| Brand | Waterpik | COSLUS |
| Best for | Dedicated bathroom counters needing uninterrupted water capacity | Compact bathrooms and travel water flossing |
| Reservoir capacity | 9.3/10 | — |
| Pressure control | 8.0/10 | — |
| Ergonomics and reach | 8.4/10 | — |
| Ownership cost | 7.6/10 | — |
| Build quality | 8.2/10 | — |
| Capacity and ergonomics | — | 8.8/10 |
| Gum safety mechanisms | — | 6.5/10 |
| Battery performance | — | 9.0/10 |
| Build and water resistance | — | 8.2/10 |
| Long-term ownership value | — | 7.5/10 |
| Brand Name | Waterpik | COSLUS |
| Product Benefits | ADA Accepted for Safety and Effectiveness, Gum Health, Prevents Bad Breath, Prevents Cavities, Removes Plaque | Gum Health, Prevents Bad Breath, Prevents Cavities, Removes Plaque |
| Model Number | WP-663 | C20 |
| Manufacturer Warranty Description | 3-Year Limited Manufacturer's Warranty, see manual for details | 2-year warranty, 24-hour after-sales service, free 30-day free returns & replacements |
| Model Name | Aquarius Water Flosser | C20 |
| Manufacturer | Water Pik, Inc. | COSLUS |
| UPC | 073950236591 | — |
| Global Trade Identification Number | 00073950236591 | — |
| Included Components | 1 Orthodontic Tip (OD-100E), 1 Pik Pocket Tip (PP-100E), 1 Plaque Seeker TIp (PS-100E), 4 Precision Tips (JT-100E), Waterpik Aquarius Water Flosser | — |
| Item Weight | 1.5 pounds | — |
| Manufacturer Part Number | WP-663 | C20(F5020E) |
| Power Source | Corded Electric | Battery Powered |
| Additional Features | Multiple Operation Modes, Multiple Pressure Settings, Multiple Tips, Rotatable Tip, Timer | ADA Accepted, Rechargeable, Battery Indicator,Premium Beauty |
| Compatible Refills | waterpik_aquarius_water_flosser_wp_667 | — |
| Unit Count | 1 Count | 1 Count |
| Item Dimensions | 3.8 x 4.7 x 10.3 inches | 9.05 x 3.54 x 2.36 inches |
| Tank Volume | — | 300 ml |
| Recommended Uses For Product | — | Brace Cleaning, Daily Cleaning, Deep Cleaning, Massage Gum, Whiten Teeth |
| Target Use Body Part | — | Teeth |
| Specification Met | — | ADA, BPA free, ETL, FCC, IPX7 |
| Our verdict | The countertop format provides ample reservoir volume for an entire flossing routine without pause. Ten pressure levels offer precise control to protect delicate gums, though the unit demands permanent counter space and an electrical outlet. | This handheld flosser eliminates cords at the expense of reservoir capacity, meaning comprehensive sessions will likely require a refill midway through. ADA acceptance gives it verified baseline credibility for plaque removal. Long-term value depends on the availability of compatible replacement nozzles over time. |
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Prices and buyer ratings are captured snapshots. A dash means the detail was not recorded, not that a feature is absent. Editorial scores are research assessments, not laboratory measurements.
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