Comparison

Dreame L40s Pro Ultra vs Dreame X50 Ultra Blanca vs Roborock Saros 20

Detailed Technical Comparison

Best value for money

1 / 12

Dreame L40s Pro Ultra

8,1

Overall score

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1 / 10

Dreame X50 Ultra Blanca

8,4

Overall score

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Best Score

1 / 9

Roborock Saros 20

8,8

Overall score

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Scores

Dreame L40s Pro Ultra

Overall score 8,1

Power and Battery 6,6

Brushing System 9,1

Mopping System 7,8

Cleaning Base 7,6

Navigation and Intelligence 9,1

Dreame X50 Ultra Blanca

Overall score 8,4

Power and Battery 7,3

Brushing System 9,1

Mopping System 7,8

Cleaning Base 8,1

Navigation and Intelligence 9,5

Roborock Saros 20

Overall score 8,8

Power and Battery 9,2

Brushing System 8,9

Mopping System 8,5

Cleaning Base 7,7

Navigation and Intelligence 9,7

Detailed Technical Comparison

Key features organised by category

General Information

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Brand Diferente ?	Dreame L40s Pro Ultra: Dreame	Dreame X50 Ultra Blanca: Dreame	Roborock Saros 20: Roborock
Release date Diferente ?	Dreame L40s Pro Ultra: 2025	Dreame X50 Ultra Blanca: 2025	Roborock Saros 20: February 2026

Power and Battery

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Suction power Diferente ?	Dreame L40s Pro Ultra: 19.000 Pa	Dreame X50 Ultra Blanca: 20.000 Pa	Roborock Saros 20: 36.000 Pa
Battery capacity Diferente ?	Dreame L40s Pro Ultra: 5.200 mAh	Dreame X50 Ultra Blanca: 6.400 mAh	Roborock Saros 20: 6.400 mAh
Runtime Diferente ?	Dreame L40s Pro Ultra: 220 min	Dreame X50 Ultra Blanca: 180 min	Roborock Saros 20: —

Brushing System

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Main brush Diferente ?	Dreame L40s Pro Ultra: Dual HyperStream Anti-Tangle Hair Brush	Dreame X50 Ultra Blanca: Dual HyperStream Anti-Tangle Hair Brush	Roborock Saros 20: DuoDivide Anti-Tangle Hair Brush
Lifting main brush ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Lifting side brush ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Extendable side brush ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Anti-tangle side brush ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Cepillo para zocalos ?	Dreame L40s Pro Ultra: No	Dreame X50 Ultra Blanca: No	Roborock Saros 20: No

Mopping System

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Mopping type Diferente ?	Dreame L40s Pro Ultra: Two Rotating Mops 180 RPM	Dreame X50 Ultra Blanca: Two Rotating Mops 180 RPM	Roborock Saros 20: Two Rotating Mops 200 RPM 13N
Mop extension Diferente ?	Dreame L40s Pro Ultra: Yes, with RoboSwing movement	Dreame X50 Ultra Blanca: Yes, with RoboSwing movement	Roborock Saros 20: Sí
Mop lifting Diferente ?	Dreame L40s Pro Ultra: Yes, 10.5 mm	Dreame X50 Ultra Blanca: Yes, 10.5 mm	Roborock Saros 20: Yes, 12-22 mm
Floor mopping temperature Diferente ?	Dreame L40s Pro Ultra: Cold water	Dreame X50 Ultra Blanca: Cold water	Roborock Saros 20: Warm Water
Detach mops at base ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Mop dirt detection ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Floor dirt detection ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí

Cleaning Base

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Auto-emptying dust bin ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Mop washing Diferente ?	Dreame L40s Pro Ultra: Yes, with hot water at 75°C	Dreame X50 Ultra Blanca: Yes, with hot water at 80°C	Roborock Saros 20: Yes, with hot water at 100°C
Mop drying Diferente ?	Dreame L40s Pro Ultra: Yes, with hot air at 45°C	Dreame X50 Ultra Blanca: Yes, with hot air at 45°C	Roborock Saros 20: Yes, with hot air at 55°C
Self-cleaning wash tray Diferente ?	Dreame L40s Pro Ultra: Yes, 3rd generation	Dreame X50 Ultra Blanca: Yes, 3rd generation	Roborock Saros 20: Yes, with hot water at 100°C
UV disinfection Diferente ?	Dreame L40s Pro Ultra: No	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: No
Detergent tank ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Automatic mop changing ?	Dreame L40s Pro Ultra: No	Dreame X50 Ultra Blanca: No	Roborock Saros 20: No
Dust bag capacity Diferente ?	Dreame L40s Pro Ultra: 3.2 L	Dreame X50 Ultra Blanca: 3.2 L	Roborock Saros 20: 2.5 L
Clean water tank Diferente ?	Dreame L40s Pro Ultra: 4.5 L	Dreame X50 Ultra Blanca: 4.5 L	Roborock Saros 20: 4 L
Dirty water tank Diferente ?	Dreame L40s Pro Ultra: 4 L	Dreame X50 Ultra Blanca: 4 L	Roborock Saros 20: 3 L
Plumbing connection kit Diferente ?	Dreame L40s Pro Ultra: Yes (purchased separately)	Dreame X50 Ultra Blanca: Yes (purchased separately)	Roborock Saros 20: No
Integrated plumbing connection ?	Dreame L40s Pro Ultra: No	Dreame X50 Ultra Blanca: No	Roborock Saros 20: No

Navigation and Intelligence

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Navigation system Diferente ?	Dreame L40s Pro Ultra: 360° LiDAR turret	Dreame X50 Ultra Blanca: 360° Retractable LiDAR	Roborock Saros 20: StarSight 2.0
Obstacle avoidance ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
AI camera ?	Dreame L40s Pro Ultra: Yes, dual	Dreame X50 Ultra Blanca: Yes, dual	Roborock Saros 20: Yes, dual
Front 3D laser sensor ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
No. of recognised obstacles Diferente ?	Dreame L40s Pro Ultra: 180	Dreame X50 Ultra Blanca: 200	Roborock Saros 20: 300
Pet recognition ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Curtain detection ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Remote camera access ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
Night vision LED ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
AI intelligent cleaning Diferente ?	Dreame L40s Pro Ultra: Yes, CleanGenius 2.0	Dreame X50 Ultra Blanca: Yes, CleanGenius 2.0	Roborock Saros 20: Yes, SmartPlan 3.0
AI stain recognition ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
CPU / Algorithm Diferente ?	Dreame L40s Pro Ultra: ?	Dreame X50 Ultra Blanca: AI Sage 13.0 Octa-core	Roborock Saros 20: ?

Advanced Features

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Step-climbing ability Diferente ?	Dreame L40s Pro Ultra: Single step 22 mm - Double step 40 mm	Dreame X50 Ultra Blanca: Single step 42 mm - Double step 60 mm	Roborock Saros 20: Single step 45 mm - Double step 88 mm
Robotic arm ?	Dreame L40s Pro Ultra: No	Dreame X50 Ultra Blanca: No	Roborock Saros 20: No
Built-in voice assistant ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí
External voice assistant (Alexa, Google Home...) ?	Dreame L40s Pro Ultra: Sí	Dreame X50 Ultra Blanca: Sí	Roborock Saros 20: Sí

Robot Tanks

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Robot dust bin Diferente ?	Dreame L40s Pro Ultra: 300 ml	Dreame X50 Ultra Blanca: 395 ml	Roborock Saros 20: 270 ml
Robot water tank Diferente ?	Dreame L40s Pro Ultra: 80 ml	Dreame X50 Ultra Blanca: 80 ml	Roborock Saros 20: 69 ml

Robot Dimensions

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Robot diameter Diferente ?	Dreame L40s Pro Ultra: 350 mm	Dreame X50 Ultra Blanca: 350 mm	Roborock Saros 20: 353 mm
Robot height Diferente ?	Dreame L40s Pro Ultra: 103.8 mm	Dreame X50 Ultra Blanca: 89 mm	Roborock Saros 20: 79.8 mm

Base Dimensions

Dreame L40s Pro Ultra

Dreame X50 Ultra Blanca

Roborock Saros 20

Base width Diferente ?	Dreame L40s Pro Ultra: 340 mm	Dreame X50 Ultra Blanca: 340 mm	Roborock Saros 20: 381 mm
Base height Diferente ?	Dreame L40s Pro Ultra: 590.5 mm	Dreame X50 Ultra Blanca: 590.5 mm	Roborock Saros 20: 488 mm
Base depth Diferente ?	Dreame L40s Pro Ultra: 456.7 mm	Dreame X50 Ultra Blanca: 456.7 mm	Roborock Saros 20: 475 mm