Coslus
Coslus C20 Water Flosser (F5020E)
$42.99Cheaper
Released 2022
Best Water Flossers · head-to-head
Coslus C20 Water Flosser (F5020E) vs Panasonic EW1511
A sourced, side-by-side comparison. Coslus C20 Water Flosser (F5020E) is cheaper at $42.99. Every spec and price links to its source.
Panasonic
Panasonic EW1511
$109.99
Released 2019
Which is better: the Coslus C20 Water Flosser (F5020E) or Panasonic EW1511?
On the specs we track, they're closely matched. The Coslus C20 Water Flosser (F5020E) is the cheaper at $42.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Coslus C20 Water Flosser (F5020E) | Panasonic EW1511 |
|---|---|---|
| US price | $42.99 | $109.99 Price from shop.panasonic.com |
| Brand | Coslus | Panasonic |
| Released | 2022 | 2019 |
| Type | cordless | cordless |
| Tank capacity (ml) | 300 | 200 |
| Pressure settings | 3 | 5 |
| Max pressure (psi) | 120 | 94 |
| Tips included | 5 | 2 |
| Power | rechargeable | rechargeable |
| Runtime min | 1 | 1 |
| Release | 2022 | 2019 |
Sources — Coslus C20 Water Flosser (F5020E): coslus.com (verified 2026-06-19). Panasonic EW1511: shop.panasonic.com (verified 2026-06-19).
What's the difference between the Coslus C20 Water Flosser (F5020E) and Panasonic EW1511?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Tank capacity (ml): Coslus C20 Water Flosser (F5020E) 300 vs Panasonic EW1511 200
- Pressure settings: Coslus C20 Water Flosser (F5020E) 3 vs Panasonic EW1511 5
- Max pressure (psi): Coslus C20 Water Flosser (F5020E) 120 vs Panasonic EW1511 94
- Tips included: Coslus C20 Water Flosser (F5020E) 5 vs Panasonic EW1511 2