High-Power Blender, Wireless Home Juicer, Portable USB Rechargeable Mini Blender And Juicer - 3 Modes, Digital Display, 15.22oz, Easy To Clean, Suitable For Travel - Enjoy Fresh Juice Anytime, Anywhere, With Self-Protection Function. If The Bottle Cap Is Not Tightened, The Self-Protection Function Will Be Activated. If The Temperature Is Too High, It Needs To Be Stopped And Cooled Down For A Period Of Time.