Best Robot Window Cleaners · head-to-head

iGLASSBOT W120-T vs W66

A sourced, side-by-side comparison. iGLASSBOT W120-T is cheaper at —. Every spec and price links to its source.

Which is better: the iGLASSBOT W120-T or W66?

The iGLASSBOT W120-T wins 1 of the 1 specs we compare head to head; the other wins 0.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec iGLASSBOT W120-T W66
US price
BrandMamibotHUTT
Released2018
Suction power (Pa) 2600
Cleaning speed mode ~2.5 min/m^2; autonomous Z- and N-shaped path ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level
Battery backup min 20 30
Spray system No onboard automated spray; wet microfiber pad, cleaning solution applied manually (included in box) 150ml intelligent water tank, wipes 70-90 sq m of glass per fill
Path planning Z/N-shaped autonomous path planning, hugs window frame edges Laser module measures range for accurate window-frame edge detection
Noise level (dB) 65 65
Safety tether Safety rope included (load rating not published) 5m safety cable (load rating not published)
Edge detection Anti-falling & edge detection sensors Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer
Weight (lb) 2.98 3.46

Sources — iGLASSBOT W120-T: cleanup.expert (verified 2026-08-01). W66: hutt.bg (verified 2026-08-01).

What's the difference between the iGLASSBOT W120-T and W66?

Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.

  • Cleaning speed mode: iGLASSBOT W120-T ~2.5 min/m^2; autonomous Z- and N-shaped path vs W66 ~2.5 min/m^2; intelligent suction algorithm adjusts to dirt level
  • Battery backup min: iGLASSBOT W120-T 20 vs W66 30
  • Spray system: iGLASSBOT W120-T No onboard automated spray; wet microfiber pad, cleaning solution applied manually (included in box) vs W66 150ml intelligent water tank, wipes 70-90 sq m of glass per fill
  • Path planning: iGLASSBOT W120-T Z/N-shaped autonomous path planning, hugs window frame edges vs W66 Laser module measures range for accurate window-frame edge detection
  • Safety tether: iGLASSBOT W120-T Safety rope included (load rating not published) vs W66 5m safety cable (load rating not published)
  • Edge detection: iGLASSBOT W120-T Anti-falling & edge detection sensors vs W66 Laser-based frame/edge ranging, more precise than prior HUTT models per manufacturer
  • Weight (lb): iGLASSBOT W120-T 2.98 vs W66 3.46

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