Between the Roomba i7+ and Saros Z70, the Roomba i7+ comes out ahead in several specs, while the Saros Z70 wins on battery life and noise. Overall, the Roomba i7+ scores 37.2 and the Saros Z70 scores 85.1 on our Mars Score.
Which should you buy?
The Saros Z70 is the clear pick on raw spec strength, leading by 47.9 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+ doesn't 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 and noise. Its strongest claims are battery life, noise, mopping, among others.
Both ship with comparable self-empty base, so those specs don't 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.
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.
Spec-level deep dives
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