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Best if you want LiDAR mapping and zone cleaning without spending much
No dedicated manufacturer spec page was found for this exact model, so suction power and body dimensions come from two launch-day news articles (dime.jp, Impress Watch) that cite the manufacturer's own figures. Multi-floor map storage, carpet detection, and voice control are treated as "no" because we found no statement of them for this exact model (the plain Q7B, not the Q7B+ with its dock). The Amazon page showed two slightly different prices (29,800 and 29,999 yen); the lower figure is used here (checked 2026-10-10).
Score Breakdown
Specs
| Method | Vacuum + mopping (tank-fed, 3 water-flow levels; no automatic mop washing or drying) |
|---|---|
| Max suction | 8,000Pa (maker's figure) |
| Mapping | LiDAR floor-plan mapping, zone cleaning supported |
| Upkeep | No auto-empty dock. Anti-tangle main and side brushes |
| Mop tank | 270 mL, 3 water-flow levels |
| Size | 325 x 327 x 99 mm |
| Weight | About 2.8 kg |
| Controls | Dedicated app (Wi-Fi) |
🙂 Good points
- 8,000Pa suction (maker's figure) — on the affordable end for a LiDAR-mapping model
- LiDAR floor-plan mapping and zone cleaning supported
- The lowest listed price of the four (checked 2026-10-10, 25,800 yen on Rakuten)
🙁 Things to note
- No auto-empty dock, so it scores low on upkeep
- At 99mm tall, the tallest of the four, which may not fit under some furniture
Sources
dime.jp launch article (2025-07-10), Roborock Q7B Japan launch [8,000Pa suction, body dimensions] ／ Impress Watch kaden.watch launch article [dimensions, anti-tangle brushes, LiDAR] ／ Amazon.co.jp product page [retail page], ASIN B0F6NP1GFL ／ Rakuten Ichiba, ROBOROCK JAPAN DIRECT [retail page], item code 6936905903730
Scores are calculated only from specs published on official and retail pages.