WYBOT B1 Cordless Robotic Pool Vacuum (2026, six-roller)
Compact 4-in-1 value — The compact 4-in-1 value pick — cleans floor, walls, and waterline on pools up to ~1,150 sq ft, on a 4.2★ / 44 owner base that has FALLEN since we first carded it — the cheaper C1 now rates higher at 4.0★ — with a modular, part-replaceable build, for about $340
Contender in the Lightweight division — The Best Budget Cordless Pool Robots of 2026: The Beatbot Sora 10 Ringer vs the WYBOT C1, B1, Aiper Seagull SE & Nepturox
⚔️ Matchup — Aiper vs WYBOT — the brand rivalry, belt by belt
⚔️ Matchup — Beatbot vs WYBOT — the brand rivalry, belt by belt
⚔️ Matchup — WYBOT vs Dolphin — the brand rivalry, belt by belt
Specs
| Model | WYUS-B1 (brand) / OS600-B (listing) |
| Coverage | Up to ~1,150 sq ft |
| Runtime | Up to 120 min |
| Owner rating | 4.2★ / 44 |
| Battery | Not stated |
| Waterline | Yes |
| Navigation | Smart nav / self-parking |
| Best for | Small-pool value |
| Filtration | 180 µm |
| Warranty | 2 yr stated by WYBOT — but claims reportedly go unanswered at the 2-yr edge |
Filtration is rated in microns (µm — millionths of a meter): the smallest particle the filter reliably traps, so a lower number is a finer filter. A human hair is ~70 µm; ultra-fine (~3–10 µm) catches the silt and dead algae that make water hazy. "µm not published" means the maker states no number — which is information in itself.
Pros
- Modular and part-replaceable — the rollers, brushes and filter are all user-swappable on the current (2026) six-roller B1, which is rarer at this price than the rating is
- A true 4-in-1: floor, walls, and waterline (with a waterline-only mode) plus edge/corner side brushes — coverage you usually pay more for
- Popular Science-reviewed, with a modular quick-release design built for easy part replacement (a durability edge in a tier of disposables)
Cons
- Small-pool rated — up to ~1,150 sq ft, tighter than the WYBOT C1's ~1,615 sq ft; a big-pool robot it isn't
- Read the base, not the star. The rosy 4.7★ this product is known for belonged to a listing that is now DEAD (B0H9QGMM9D) and sat on a base ~77% free-product Amazon Vine with no US verified purchasers. The live listing we wire reads 4.2★ across 44 — the deepest surviving B1 base, and the number on this card. WYBOT's own re-listings show why you cannot shop this brand on the headline: the same robot also appears at 4.2★/45 and, as the B1C variant, at 4.6★/112. The cheaper C1 outrates all of it at 4.0★ across 948
- ~120-minute runtime, and the battery is the real end-of-life: the pack is user-SERVICEABLE (it can be opened and swapped) but WYBOT sells no genuine replacement in its US or EU stores or on Amazon, so there is nothing to swap it WITH. Serviceable and unobtainable is functionally sealed — the robot is the consumable
- WYBOT brand flag — three issues (verified 2026-07-20): (1) Questionable customer service — warranty claims frequently go unanswered, clustering right at the 2-year warranty edge ("multiple emails sent to Wybot… no response", "they dont honor their warranty"); one C1 owner is the exception, reporting a fast replacement. (2) Relisting / Amazon-Vine-seeding — WYBOT pads fresh listings with free-product Vine reviews and its ASINs drift often (the B1's rosy 4.7★/65 sits on a ~77%-Vine relisting; the newer C1 listing runs ~80% Vine), so read the review base before trusting any WYBOT star rating. (3) Battery reliability with no genuine replacement — packs fade and WYBOT sells no purchasable genuine replacement (the batteries are user-serviceable, but no pack is sold in its US/EU stores or on Amazon), so the robot is the consumable. Buy where returns are easy and don't count on post-warranty help.
Pro review “It's so easy to use it almost feels like a toy, but it's actually a tool.”— Stan Horaczek, Popular Science
FAQ
Who is the WYBOT B1 Cordless Robotic Pool Vacuum (2026, six-roller) for?
You have a smaller pool (up to ~1,150 sq ft) and want a modular, part-swappable build for the least money (~$340) — but note the rating belt has moved: the B1 sits at 4.2★ / 44 and the cheaper C1 now rates higher at 4.0★.
What do owners say about the WYBOT B1 Cordless Robotic Pool Vacuum (2026, six-roller)?
4.2★ across 44 owner ratings (Amazon, read September 2026 · early data · incentivised base).
What is the warranty on the WYBOT B1 Cordless Robotic Pool Vacuum (2026, six-roller)?
2 yr stated by WYBOT — but claims reportedly go unanswered at the 2-yr edge
Record
- — Re-sourced again. The listing adopted on August 31 went Currently unavailable with its base stripped to ten ratings; the card now links the only B1 listing that sells, at 4.2 stars across 44 ratings — early data, with some free-product Vine reviews visible.
- — The listing we linked went dead. A category search found the B1 re-listed under new ASINs; we re-wired to the deepest surviving base (3.9★ across 147) and dropped the 3.8★/193 figure that died with the old listing.
✓ Safety: no active recall — No CPSC recall touches the WYBOT B1 (the Apr 2026 recall was the WYBOT S1/WY200 + the Osprey 700 Max). It's still a lithium battery — buy current stock, use the supplied charger, and charge it away from anything flammable.
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Data last verified: September 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.