Smoke (Detector) Alarm Wall Clock with Siren

A top cool and unique creative wall clock, which can be placed on the office,home,and public places. Once a certain concentration of smoke reaches the clock, the red warning light will flash 18 seconds then the ear-piercing alarm issued until you remove or dispearse the smoke to stop. Not only played against fire and smoking tips, but also ideal fr daily use. Unit Size:37.8*37.8*6 cm (15") Operated by: 1 pcs 9v battery to run the smoke alarm function 1 pcs AA battery to run the time