The Roborock Saros Z70 stands out from every other robot vacuum on the market with a feature the world has been waiting years for: it climbs stairs. With a built-in robotic arm (StarSight Autonomous System), the Z70 lifts itself step by step and cleans multiple floors without human intervention. Is the premium price worth it? We analyze everything.
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What Is the Roborock Saros Z70
The Saros Z70 was announced at CES 2025 and released in 2026. It is the first commercially available robot vacuum that can overcome height obstacles (steps up to ~20cm) using an articulated robotic arm. Beyond that, it features top-tier vacuuming and mopping specifications that rival any flagship robot vacuum.
Specifications
| Feature | Roborock Saros Z70 |
|---|---|
| Suction | 22,000 Pa HyperForce |
| Mopping | Dual spinning pads, VibraRise 4.0 |
| Navigation | LiDAR + 3D ToF + StarSight System |
| Stairs | Up to 20cm height, robotic arm |
| Battery | 6,400 mAh (~180 min) |
| Obstacle Avoidance | AI object recognition (3D structured light) |
| Base Station | Auto-empty + auto-wash + hot air dry |
| Price | ~1,800 EUR (EU estimate) |
How It Climbs Stairs
The StarSight technology uses:
- 3D ToF camera: Scans each step and calculates exact height, width, and depth precisely
- Retractable robotic arm: Extends, grips the step, and lifts the body. Works like a climber's hand
- Anti-fall sensors: Triple cliff sensors ensure it will never fall during the transition
- Multi-floor mapping: Stores maps of each floor separately. Knows where stairs are and how to navigate them
During testing, the Z70 needs ~45 seconds per step. A 10-step staircase completes in about 8 minutes. It is not fast, but fully autonomous, you never need to carry it manually. The technology supports wood, marble, and tile staircases. The vacuum automatically detects surface type and adjusts grip force accordingly.
Cleaning Performance
Beyond stairs, the Z70 is a top-tier robot vacuum:
- 22,000 Pa suction: Cleans pet hair, dust, debris from carpets and hard floors effectively
- VibraRise 4.0: Mop pads lift 20mm automatically on carpets, then lower for mopping
- AI obstacle avoidance: Recognizes cables, shoes, pets, avoids 99% of obstacles
- Auto-empty station: Empties the vacuum automatically, washes mops with hot water, dries with hot air
Who Is It For
The Z70 is ideal for:
- Homes with 2+ floors that want a single vacuum instead of two separate units
- Elderly or mobility-impaired individuals who struggle with carrying a heavy vacuum between floors
- Tech enthusiasts who want cutting-edge robotics technology in their home
- Large homes (150+ sqm) that need powerful suction and mopping capabilities
Saros Z70 vs Classic Robot Vacuums
| Feature | Saros Z70 | Roborock S8 MaxV | Dreame X40 |
|---|---|---|---|
| Suction | 22,000 Pa | 10,000 Pa | 12,000 Pa |
| Stairs | Yes (arm) | No | No |
| Mopping | Dual pads | Dual pads | Dual pads |
| Auto-empty | Yes | Yes | Yes |
| Price | ~1,800 EUR | ~900 EUR | ~1,100 EUR |
The Z70 costs almost double, but if it saves you buying a second vacuum (450-900 EUR), the difference shrinks significantly.
Disadvantages
- Premium price: ~1,800 EUR is not for every budget, but it replaces two vacuums
- Slow climbing: 8+ minutes per staircase. Does not replace a handheld vacuum for quick stair cleaning
- Size/weight: Larger than typical robot vacuum due to the arm mechanism. Base needs more space
- Stairs without railing: Needs stable surface on each step. Does not work on spiral or very narrow stairs
- Noise: The arm makes noise during climbing, not ideal for nighttime hours
App and Smart Home Integration
The Z70 uses the Roborock App which is one of the best in the category:
- 3D maps of each floor with real-time vacuum position tracking
- Scheduling per room, per floor, per day of the week
- No-go zones and virtual walls on each map
- Remote control via phone even when you are away from home
- Alexa, Google Home, Siri Shortcuts integration
- Home Assistant via Valetudo or cloud integration
When to Buy
If you are considering buying the Z70, wait until the first real-world reviews arrive (March-April 2026). First-gen technologies often have bugs that are fixed in firmware updates. Also, the price is expected to drop 10-15% after the first 6 months. If you need a solution now, get a Roborock S8 MaxV Ultra for the ground floor and a budget Roborock Q Revo for upstairs, it costs less overall.
Conclusion
The Roborock Saros Z70 is a genuine technological marvel and the first robot vacuum in history to break the staircase barrier once and for all. If you live in a multi-story home and want full cleaning automation without ever manually carrying the vacuum between floors, the Z70 is absolutely worth every euro. If you live in a single-story house or apartment, a Roborock S8 MaxV Ultra or Dreame X40 Ultra delivers excellent results at half the price without the unnecessary stair climbing mechanism.