Model Number: RW11-6 Brand Name: Looline Key Specifications/Special Features: Features:1. Two ways control: remote control + smart APP control2. Still work even below -20 degree, so you can use it in winter3. Works on all smooth surfaces4. Framed or frameless window all support cleaning5. 99% window coverage6.More than 20M extension safety cord, high window is ok to clean7.Power-off protection, won't fall down even finished cleaning8.With intelligent cleaning route, fast and efficient9.Small and lightweight, easy to carry10.Risk-free to clean the window of tall buildingCertification: CE RoHS Directive-compliant