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- Robert II RS 770 vs Roomba Combo j5+
Fakir Robert II RS 770 vs iRobot Roomba Combo j5+
What Robert II RS 770 does better (4) and where Roomba Combo j5+ wins (5) — every spec side by side.
vs
4.9Navigation5.1
3.5Base station5.9
5.6Battery3.1
Dimensions
Size comparison
Robert II RS 770Roomba Combo j5+
| Robert II RS 770 | Roomba Combo j5+ | Difference | |
|---|---|---|---|
| Height | 97 mm | 87 mm | +10 mm |
| Width / diameter | 350 mm | 339 mm | +11 mm |
| Length | 350 mm | 339 mm | +11 mm |
| Weight | 3.6 kg | 3.4 kg | +0.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is Robert II RS 770 better than Roomba Combo j5+?
- NavigationLaser (LiDAR) vs Camera (vSLAM)
- Runtime150 min vs 75 min2×
- Battery capacity5,200 mAh vs 2,200 mAh2.4×
- Dustbin (robot)450 ml vs 389 ml+16%
Why is Roomba Combo j5+ better than Robert II RS 770?
- Obstacle avoidanceBasic sensors (infrared / bumper) vs AI camera
- Base stationCharging dock vs Auto-empty dock
- Height97 mm vs 87 mm+11%
- Charging time300 min vs 180 min+67%
- Water tank (robot)200 ml vs 210 ml+5%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 4,000 Pa | — |
| Dustbin (robot) | 450 ml | 389 ml |
| Main brush | Single main brush | Dual main brushes |
| Side brushes | 2 | 1 |
| Dirt detection | — | Yes |
| Noise level | 65 dB | — |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Camera (vSLAM) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors | vSLAM camera, Wall sensor, Cliff sensors |
| Obstacle avoidance | Basic sensors (infrared / bumper) | AI camera |
| Threshold climbing | 20 mm | — |
| No-go zones / virtual walls | — | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | — | Mop pad |
| Water tank (robot) | 200 ml | 210 ml |
| Base station | ||
| Base station | Charging dock | Auto-empty dock |
| Auto-empty dust station | — | Yes |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 2,200 mAh |
| Runtime | 150 min | 75 min |
| Charging time | 300 min | 180 min |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 339 mm |
| Length | 350 mm | 339 mm |
| Height | 97 mm | 87 mm |
| Weight | 3.6 kg | 3.4 kg |
| Shape | Round | Round |
| Colours | White | Black, Silver |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | — | Amazon Alexa, Google Assistant, Apple Siri |
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