Why Choose W120-T: Intelligent cleaning routes, Clean your high-rise windows in a safe and easier way; Offers you a new way of window cleaning; Third general square robot window cleaner with stylish design and good performance; The 10 best smart devices of IFA 2018. Easy Operation: Control your robot in three simple ways: APP\One touch Key\Remote. AI Smart Cleaning Modes: Multiple smart modes: in patterns of Z, N, or Z- to- N ,more than efficient , more than you expected. Square Shape Covers More: W120-T Covers maximumly 99% of the glass surface; Back to where it start when finished the work; Special designed Mico Fabric Cloth with no hurt to glass surface; Available to frame and frameless glass,tables,and smooth floors/wall surfaces. Multi-levels of Safety Guarantee: Multi-direction anti-falling sensors,with strong safety rope equipped; The built-in UPS battery help robot suck on windows for 20minutes and send alarms if power supply is cut suddenly; Multi-condition Application: use W120-T to clean internal/external windows of high-rise buildings/stores bathroom windows, or other flat surface like marble walls, ceramic walls. Warranty and Product Specifications: Warranty: 1 Year. Specifications: Net Weight: 1.35kg; Dimension: 25*25*10cm; Cleaning Speed: Abt 2.5min/sqm; Charging Time: Abt 60min; Noise: ? 65DB; Can't use for windows with gaps in the middle, nor for skylights or inclined work surfaces. What's in the Box: W120-T/Adapter/User Manual/Remote Control/Extension Cable/Cleaning Pads/Cleaning Solution/Safety Rope.