Is the robotic arm actually useful, or is it a gimmick?

Owner and reviewer consensus is overwhelmingly that it's inconsistent - nearly every major review outlet and multiple long-term owners describe it as unreliable at picking things up, sometimes getting items like clothing caught and stuck. Several owners report disabling the arm entirely after initial use.

Should I get the Z70 or the cheaper Saros 10R?

Multiple owners who've used both say the Saros 10R is the better value unless you specifically want to experiment with the arm feature - the core vacuum and mop performance is very similar, and the Z70's $1,000+ premium is largely paying for the arm that many owners end up disabling.

How's the core cleaning and mopping performance, separate from the arm?

This is consistently praised - Homes and Gardens reported it cut their manual vacuuming by 70%, and the hot-water mop washing and drying dock gets solid marks even from reviewers who were harsh on the arm specifically.

Does the arm get stuck or cause the robot to freeze during cleaning?

Yes, this is a documented issue - Wirecutter's testing and multiple owner reports describe the robot pausing or appearing to freeze while 'sorting items,' which can slow down or interrupt cleaning sessions rather than speeding them up.

Is it worth it a year or more after purchase, or does performance degrade?

A 6-months-later YouTube follow-up review found the core navigation and cleaning performance held up well over extended ownership, suggesting the hardware quality issues are limited mainly to the arm rather than the whole unit degrading over time.

Robot Vacuum & Mop

~$1,299

Roborock

Roborock Saros Z70

Name: Roborock Saros Z70
Brand: Roborock
Price: 1299 USD
Availability: InStock

This is Roborock's flagship, and the headline feature is a five-axis OmniGrip mechanical arm that physically picks up shoes, fabric, and small clutter and sets it aside before cleaning — the first robot vacuum to do that in the US market. It earned an innovation award for the idea, and independent testing found it genuinely leads the category on obstacle avoidance (108 recognizable obstacle types, strong real-world scores). The honest caveat is that the arm itself only successfully grabs and relocates an object about half the time in testing and only recognizes three object categories, so treat it as a nice-to-have rather than a reason to stop pre-tidying. The dustbin is the smallest Roborock has shipped at 180ml, carpet deep-cleaning and pet-hair pickup on carpet both tested below the category average despite the price, and at full MSRP (near $2,000) this is a hard sell against Roborock's own cheaper Saros 10R or Qrevo Edge, which clean nearly as well for hundreds less. If the arm itself isn't the draw, most owners would be better served by a cheaper Roborock. It does deliver Roborock's best mopping (80°C hot water washing, 22mm auto mop lift) and most mature app.

Approx. price

~$1,299

Suction

22000 Pa

Navigation

LiDAR + Camera

Best For

Early adopters who want the arm gimmick and don't mind flagship pricing

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Specifications

LiDAR + Camera

22000 Pa

180 min

Yes

Auto Mop Washing

Yes

Obstacle Avoidance

Yes

Carpet Detection

Yes

Auto Mop Lifting

Yes

Multi-Floor Mapping

Yes

Type

Robot Vacuum & Mop

Noise Level

50 dB

Dustbin Capacity

180 ml

Water Tank

590 ml

App Control

Yes

Dimensions

13.78 x 13.9 x 3.14 in

Warranty

1 year

Model

Saros Z70

Highlights

OmniGrip Robotic Arm Moves Objects22,000Pa HyperForce SuctionAward-Winning Obstacle Avoidance

Pros

✓OmniGrip mechanical arm genuinely picks up and relocates small objects like shoes and fabric before cleaning — a real industry first
✓Best-in-class obstacle avoidance in independent testing (22/24 score versus a 16.6 category average)
✓80°C hot water mop washing plus 22mm auto mop lift keeps mopping and carpet cleanly separated
✓Ultra-slim 3.14in body still slides under most furniture despite the added arm hardware
✓Roborock's most mature app, with SmartPlan 2.0 adaptive routines and a built-in voice assistant

Cons

✗The mechanical arm only successfully grabs and moves an object about half the time in testing, and recognizes just three object categories
✗Smallest dustbin Roborock has shipped at 180ml, meaning more frequent dock empties even with auto-emptying
✗Carpet deep-cleaning (67% vs. 75% average) and pet-hair pickup on carpet (83% vs. 92% average) both tested below category norms
✗Near $2,000 at full retail — reviewers note the cheaper Qrevo Edge or Saros 10R clean nearly as well for hundreds less
✗First-generation arm mechanism, so there's no multi-year reliability record yet

Owner Insights(140 discussions)

The Saros Z70 is Roborock's most talked-about launch in years thanks to its OmniGrip robotic arm, designed to physically pick up socks, tissues, and small clutter before cleaning. Nearly every major outlet that tested it - The Verge, Trusted Reviews, Mashable, Gizmodo, Digital Trends, Lifehacker, and WIRED - arrived at a strikingly consistent verdict: the underlying vacuum and mop hardware is genuinely excellent (Homes and Gardens says it cut their manual vacuuming by 70%), but the arm itself is unreliable enough that most reviewers call it a gimmick that isn't ready for prime time.

Owner discussions in owner discussions echo this split almost exactly. A long-term owner review summarizes the arm as having 'very little real use,' and a more pointed post titled 'SAROS Z70 IS A WASTE OF MONEY!! DO NOT BUY!' describes the arm getting a t-shirt caught and stuck, leading that owner to disable the arm feature entirely. Once disabled, several owners note the Z70 essentially becomes an expensive Saros 10R without the extra features that price premium is supposed to buy. Where the Z70 does deliver is in the parts reviewers rarely complain about: the core navigation, suction, and hot-water mop-washing dock all get consistently good marks, and a 6-months-later YouTube follow-up confirms that performance holds up over extended ownership.

This is a purchase for buyers who are specifically curious about robotic-arm technology and are willing to pay a premium to be early adopters, understanding they may end up disabling the signature feature. Buyers who just want Roborock's excellent core cleaning and mopping performance without paying for an unreliable arm should get the Saros 10R instead - it's the machine multiple Z70 owners say they wish they'd bought.

Pros

+Beyond the arm gimmick debate, Homes and Gardens' hands-on testing found it 'cut my manual vacuuming by 70%,' and a 6-months-later YouTube follow-up confirms the core navigation and cleaning performance holds up well over time
+The underlying vacuum and mop hardware - separate from the arm - inherits Roborock's well-regarded Saros 10R-class navigation and suction, which owners in a long-term owner communities review call reliable day to day
+AfterDawn's review specifically praises how little is 'demanded from the owner' for routine operation, a genuine convenience for buyers who just want a robot that runs itself
+The dock's hot water mop washing and drying cycle gets consistently solid marks even from reviewers who were critical of the arm specifically
+It's the most talked-about robot vacuum launch of its generation, which means an unusually deep well of real owner troubleshooting threads and comparison discussions exists for anyone doing due diligence before buying
+afterdawn.com's review scored it 4.5/5 overall, indicating that once expectations for the arm are set correctly, owners and reviewers can still land on a strongly positive verdict for the package as a whole

Cons

−The signature OmniGrip robotic arm is the most consistently criticized feature across nearly every outlet - The Verge, Trusted Reviews, Mashable, Gizmodo, Digital Trends, Lifehacker, and WIRED all published reviews specifically calling the arm inconsistent, slow, or a 'gimmick'
−A owner communities post titled 'SAROS Z70 IS A WASTE OF MONEY!! DO NOT BUY!' documents the arm picking up a t-shirt that got caught and stuck, leading the owner to disable the arm entirely - at which point they say it's effectively a worse value than cheaper models without an arm
−A long-term owner communities review from an owner who lived with it for months summarizes the arm as 'just a nice gimmick, with very little real use for it' and says they would have preferred the cheaper Saros 10R without the arm
−Multiple owners describe the arm getting 'stuck' or the robot appearing to freeze mid-task while 'sorting items,' per Wirecutter's testing, which slows down cleaning sessions rather than speeding them up
−At roughly $1,300-2,599 depending on configuration, owners consistently say the $1,000+ premium over the armless Saros 10R isn't justified by what the arm actually delivers in daily use
−The added mechanical complexity of the arm raises legitimate long-term durability and repairability questions that reviewers flag but can't yet fully answer given the product's relative newness