Model Number: RW11-L9 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 supports 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 buildingCertifications: CE RoHS Directive-compliant