Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | iRobot - Roomba i7+ | Roborock - Saros Z70 |
|---|---|---|
| Battery life | 75 min | 180 min |
| Noise | 68 dB | 65 dB |
| Mopping | false | true |
| Lidar | false | true |
| AI obstacle avoidance | false | true |
| Suction | 0 Pa | 22000 Pa |
Between the Roomba i7+ and Saros Z70, the Roomba i7+ comes out ahead in several specs, while the Saros Z70 wins on battery life / noise. Overall, the Roomba i7+ scores 36.6 and the Saros Z70 scores 88 on our Mars Score.
Which should you buy?
The Saros Z70 is the clear pick on raw spec strength, leading by 51.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The Roomba i7+ does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Saros Z70 if you care most about battery life / noise. Its strongest claims are battery life, noise, mopping, among others. The single most decisive one: Battery life — 140.00% more. 180 min vs 75 min.
Both ship with comparable self-empty base, so those specs do not separate the two — focus on the differences below.
Bottom line: the Saros Z70 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: iRobot - Roomba i7+ or Roborock - Saros Z70?
Roborock - Saros Z70 leads the current Mars Score by 51.4 points.The more useful decision is the trade-off behind that result: compare suction, battery life, mopping against the way you will actually use the product.
Choose iRobot - Roomba i7+ if…
iRobot - Roomba i7+ does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Roborock - Saros Z70 if…
Roborock - Saros Z70 has the measurable edge on battery life min, noise db, has mopping.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why iRobot - Roomba i7+ wins
- No decisive advantages.
Why Roborock - Saros Z70 wins
- ▲Battery life — 140.00% more. 180 min vs 75 min.
- ▲Noise — 3.00 dB less. 65 vs 68.
- ▲Has Mopping.
- ▲Has Lidar.
- ▲Has AI obstacle avoidance.
- ▲Suction: 22000 Pa vs 0 Pa.
- ▲Water tank: 270 ml vs 0 ml.
Spec comparison
Cleaning
| Spec | iRobot - Roomba i7+ | Roborock - Saros Z70 |
|---|---|---|
| Suction | 0 Pa | 22000 Palead |
| Mopping | false | truelead |
| Water tank | 0 ml | 270 mllead |
| Dustbin | 400 mllead | 300 ml |
| Carpet detection | true | true |
Navigation
| Spec | iRobot - Roomba i7+ | Roborock - Saros Z70 |
|---|---|---|
| Lidar | false | truelead |
| Camera navigation | true | true |
| AI obstacle avoidance | false | truelead |
| Max climb | 20 mm | 40 mmlead |
Autonomy
| Spec | iRobot - Roomba i7+ | Roborock - Saros Z70 |
|---|---|---|
| Battery life | 75 min | 180 minlead |
| Self-empty base | true | true |
| Self-wash mop | false | truelead |
| Self-dry mop | false | truelead |
| Noise | 68 dB | 65 dBlead |
Frequently asked
Which has stronger suction, Roomba i7+ or Saros Z70?+
Saros Z70 delivers 22000 Pa vs 0 Pa.
Do Roomba i7+ or Saros Z70 mop?+
Saros Z70 mops; Roomba i7+ vacuums only.
Which has a self-emptying base, Roomba i7+ or Saros Z70?+
Both ship with a self-emptying base.