Lefant M310 Ultra vs Lefant M2S Pro
Quick take: The Lefant M310 Ultra costs $10 less; the Lefant M2S Pro has stronger suction (10,000 vs 6,000 Pa); the Lefant M2S Pro runs longer per charge (240 vs 170 min).
Which one to buy
For $10 more, the Lefant M2S Pro adds a self-empty station, and that settles it for almost everyone, especially now that the M310 Ultra is discontinued with no successor. Its bagless dock holds 2.7L and is rated for 90 days without touching the robot's bin, with an optional bag if odor bothers you. The Lefant M310 Ultra has a plain charging base, so you empty it by hand after every run or two.
The rest of the listed specs lean the same way. Both use LiDAR mapping, PSD obstacle avoidance that works in the dark, multi-floor maps and Lefant's mop-holder trick for carpet. The M2S Pro is rated at 10000 Pa against 6000 Pa, runs 240 minutes against 170, saves up to three maps, and Lefant publishes its tank, bin and noise figures, where the M310 Ultra's capacities and weight go unlisted.
The M310 Ultra's one real advantage is height. At about 3 inches it slides under furniture that the 3.74-inch M2S Pro will bump into, so measure your lowest sofa or bed frame before you order. If that gap is under 3.74 inches and it's where the dust collects, the M310 Ultra was the one that reached it, though it is now discontinued.
Lefant M310 Ultra
The Lefant M310 Ultra suited low furniture the taller M2S Pro can't clear, if you didn't mind emptying the bin by hand, but it is now discontinued with no successor.
Lefant M2S Pro
Best for nearly every home: the self-empty dock, stronger suction and longer runtime cost just $10 more.
| Spec | Lefant M310 Ultra | Lefant M2S Pro |
|---|---|---|
| Price | ~$170 | ~$180 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 6000 Pa | 10000 Pa |
| Battery | 170 min | 240 min |
| Navigation | LiDAR | LiDAR |
| Filtration | — | HEPA |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | — | 60 dB |
| Dustbin | — | 150 ml |
| Water tank | — | 300 ml |
| Self-empty dock | No | Yes |
| Auto mop washing | No | No |
| Hot water washing | No | No |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | No | No |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | — | 12.6 x 12.6 x 3.74 in |
| Weight | — | — |
| Warranty | 1 year | 1 year |
Pros & cons
Lefant M310 Ultra
- ✓ToF LiDAR navigation with confirmed multi-layer map surveying
- ✓190° PSD obstacle avoidance claims millimeter precision, including in darkness
- ✓6000 Pa suction, stronger than several Lefant siblings
- ✓170-minute runtime covers larger homes without a mid-clean charge
- ✓Four selectable cleaning patterns (plan, random, along-the-wall, fixed-point)
- ✓Ultra-slim 3-inch body clears more furniture than typical LiDAR robots
- ✗No self-empty dock — manual dustbin emptying only
- ✗No dustbin or water tank capacity published
- ✗No weight or full dimensions published
- ✗Carpet handling is avoidance via manual mop-holder removal, not an automatic mechanical lift
- ✗No noise level or HEPA/filtration rating published
Lefant M2S Pro
- ✓dToF LiDAR with genuine multi-floor mapping and up to 3 saved maps
- ✓Bagless 90-day self-empty station, with an optional bag for odor control
- ✓PSD obstacle avoidance with 9 sensors across 190°, works in the dark, plus 4 anti-drop sensors
- ✓Granular app control — 4 suction levels, 3 water-flow levels, zone split/merge, do-not-disturb
- ✓Long 240-minute runtime off a 5200mAh battery
- ✓Quiet mode rated under 60 dB
- ✓HEPA filters included, and a meaningfully lower price than comparable self-empty LiDAR robots
- ✗No auto mop washing or heated water at the dock
- ✗Mop pad avoids carpet rather than mechanically lifting off it
- ✗Small 150ml dustbin between empties (mitigated by the self-empty station)
- ✗300ml water tank needs refilling on larger homes
- ✗14.2 lbs listed item weight likely includes the station, so true robot weight is unclear
Lefant M310 Ultra vs Lefant M2S Pro: common questions
Does the Lefant M2S Pro's dock wash the mop?▾
No. The station empties the dustbin only, with no mop washing or heated water, and the mop avoids carpet rather than lifting off it. The M310 Ultra has neither feature either.
Will the Lefant M2S Pro fit under my couch?▾
Only if the gap is more than 3.74 inches, its listed height. The M310 Ultra is about 3 inches tall, so it reaches under lower furniture, which was the one practical reason to pick it before it was discontinued.