It has no brushroll, which means it has nothing for hair to wrap around. On hard floors that is a genuine advantage over machines costing three times as much.
By Scooter M., Enthusiast - published September 2, 2026
We have not tested these machines. Everything here comes from published specifications, manufacturer manuals and retailer listings, all cited below. Prices last verified September 2, 2026.
How this is funded: if you buy through a link here we may earn a commission, at no extra cost to you. It does not change which machines we recommend or what we say about them. Full disclosure.
The Lefant M210 is the best robot vacuum under $100 because of one design decision: it uses a brushless suction port instead of a roller brush, so there is physically nothing for long hair to wrap around. It is 2.99 inches tall, runs up to 120 minutes, and has no map and never will.
#
Product
Best for
Score
Price
01
Lefant M210A brushless suction port instead of a roller brush, which is why it handles hair better than machines twice its price. It has no map and never will.
Scores come from the published rubric on How We Pick: suction 25%, navigation 25%, pet hair 20%, running cost 20%, setup 10%. Editorial judgments about published specifications, not test results.
The brushless inlet, and why it matters more than the price suggests
Owners of $600 robot vacuums cut a solid sleeve of hair off the brushroll with scissors every few weeks. It is the defining maintenance job of this category, and the reason manufacturers now market anti-tangle brush geometry as a premium feature.
The M210 solves it by not having a brush. Debris goes straight into the airflow path, and hair follows it into the bin rather than catching on bristles. That is why this $90 machine scores 7.5 on pet hair - the same as machines at three times the price, and better than several of them.
The trade is completely real and worth being blunt about: on carpet, no brush means no agitation. It lifts what is lying on top of the pile and leaves everything worked into it. Lefant's own listing goes further and tells you not to use zigzag mode - the machine's most efficient pattern - on carpet at all. This is a hard-floor machine.
What the specifications mean in a real home
2.99 inches tall, 11 inches across. It clears most sofa and bed frames, which on a hard-floor home is where the dust actually is.
Up to 120 minutes - and Lefant is explicit that this is in low suction mode, which is a more honest presentation than most manufacturers manage. Long enough for a small flat several times over.
Lithium iron phosphate cells. An unusual and genuinely better choice at this price. LiFePO4 tolerates daily full cycles considerably better than the standard lithium-ion chemistry, which for a machine you intend to run every day is a real longevity advantage - and Lefant does not make much of it.
FreeMove Tech 3.0 with six-direction infrared sensing. Anti-collision, not navigation. It reduces how hard the machine hits things and how often it gets wedged; it does not build a map.
App and voice control with six cleaning modes. Notable at this price, and it means you can schedule it - which is most of what people actually use an app for.
The specification Lefant does not give you
No suction figure for the M210. Lefant publishes 4,500Pa for the M310 and states nothing for this machine, which is a strange gap within one product line. We score it as unverified rather than assuming the number carries across.
Who should buy it
A hard-floor home under about 800 square feet, ideally with a shedding pet, on a hard budget ceiling. On those specifics this is the best value on the entire site, and it is not close.
Who should not
Anyone with medium or high-pile carpet - the brushless inlet is the wrong tool and a cheaper machine with a beater bar would do better. Anyone with more than about 800 square feet, where the absence of a map means genuinely patchy coverage. And anyone who wants no-go zones, which require a map to draw on.
If any of those apply, the $50 step up to the under-$150 band buys LiDAR mapping and is the most worthwhile fifty dollars on the whole price ladder.
What we did not verify
We have not handled this machine. Everything above is read from published specifications and the manufacturer's own documentation, cited below. These are the specific claims we could not check:
How well it cleans. Lefant publishes no suction figure for the M210, so there is no specification to assess.
Real coverage. Without a map, coverage depends entirely on floor plan and start position and cannot be judged from a spec sheet.
Whether 120 minutes holds outside the stated low-suction mode.
Whether the brushless inlet clogs with heavy pet hair over months of use.
LiFePO4 cycle life in this specific machine. The chemistry is better on paper; Lefant publishes no cycle count.
Noise - no decibel figure published.
Long-term parts and app availability, which is a larger unknown for a small brand than for iRobot or TP-Link.
That list is not a disclaimer bolted on at the end. It is the actual scope of this review, and anywhere a competitor's confident phrasing implies they checked these things without saying how, it is worth asking the same question of them.
The brushless inlet has nothing for hair to wrap around, so there is no brushroll to cut free every fortnight
2.99 inches tall clears most sofa and bed frames that stop taller machines
Lithium iron phosphate cells, a chemistry that tolerates daily full cycles better than the usual lithium-ion
Nothing to subscribe to and no dust bags to buy
What it gives up
No published suction rating at all, which for a machine sold on suction is a strange omission
No mapping. It covers a room by bouncing around it, so a large floor plan takes several passes
The manufacturer says not to use zigzag mode on carpet, which rules out its most efficient pattern on rugs
Brushless inlets are weaker on embedded carpet grit than a beater bar
Our scoring
Suction5.0
Navigation3.5
Pet hair7.5
Running cost8.5
Setup8.0
Weights and the arithmetic behind the total are published on How we pick so you can recompute this yourself.
Who it is for: A one-bedroom apartment with hard floors, a shedding pet, and a hard budget ceiling under $100.
Skip it if: you have more than about 800 square feet of open floor, or any medium-pile carpet you actually want cleaned rather than skimmed. Without a map it will miss areas, and without a brushroll it will not dig.
Questions people actually ask
+−Is the Lefant M210 worth it?
For a hard-floor home under about 800 square feet, especially with a shedding pet, it is the best value on this site. Its brushless suction port means hair cannot wrap around anything, which is the defining maintenance problem of this category.
+−Is the Lefant M210 good for pet hair?
On hard floors, better than machines costing three times as much. It has no roller brush, so there is physically nothing for long hair to wrap around. On carpet it is a poor choice, because without a brush there is no agitation to lift embedded hair from the pile.
+−Does the Lefant M210 have mapping?
No. It uses FreeMove Tech 3.0 infrared anti-collision sensing and follows fixed cleaning patterns. That means no coverage tracking, no no-go zones and no resuming where it stopped. LiDAR mapping starts at around $149.
+−How much suction does the Lefant M210 have?
Lefant does not publish a figure for this model, which is a notable gap given it publishes 4,500Pa for the M310 in the same line. We score it as unverified rather than assuming the M310 number applies.
+−Does the Lefant M210 work on carpet?
Poorly, and Lefant effectively says so - its own listing tells you not to use zigzag mode on carpet. The brushless inlet that makes it excellent for hair on hard floors means there is no brush to agitate pile. Buy a machine with a beater bar for a carpeted home.
Sources
Every specification quoted above was read off one of these documents on the date shown. Where a manufacturer does not publish a figure, this site says "Not published" rather than estimating it.
