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  3. W9 vs Robot Vacuum S40C

Vactidy W9 vs Xiaomi Robot Vacuum S40C

What W9 does better (1) and where Robot Vacuum S40C wins (1) — every spec side by side.

Vactidy W9
Vactidy · 2025W9
1 advantage≈ US$140
vs
Xiaomi Robot Vacuum S40C
Xiaomi · 2025Robot Vacuum S40C
4.6Score
1 advantage≈ US$140
Higher score
7.1Battery2.1

Why is W9 better than Robot Vacuum S40C?

  1. Runtime180 min vs 100 min+80%

Why is Robot Vacuum S40C better than W9?

  1. Noise level67 dB vs 63 dB+6%
Specifications

Side by side

Vactidy W9Vactidy W9≈ US$140
Suction & cleaning
Suction power—5,000 Pa
Dustbin (robot)—520 ml
Main brush—Single main brush
Side brushes—1
Noise level67 dB63 dB
Navigation & obstacles
Navigation—Laser (LiDAR)
Navigation sensors—LiDAR laser (LDS), Cliff sensors
Obstacle avoidance—Basic sensors (infrared / bumper)
Threshold climbing—20 mm
No-go zones / virtual walls—Yes
Room mapping & room selection—Yes
Mopping
Mop type—Mop pad
Water tank (robot)—260 ml
Base station
Base station—Charging dock
Battery & runtime
Battery capacity—2,600 mAh
Runtime180 min100 min
Charging time—360 min
Size & weight
Width / diameter—340 mm
Length—340 mm
Height—97 mm
Weight—3.4 kg
ShapeRoundRound
ColoursBlackWhite
App & smart home
App controlYesYes
Voice assistantsAmazon Alexa, Google AssistantAmazon Alexa, Google Assistant
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