MATERIAL This wall clock its mainly material is metal crystal beads SIZE Clock Diameter 505045cm 20 x 20 x 18 inch Product Gross Weight about 095KG 209LB INSTALL The clock backside has a hole which is easy to hang it on the wall with screw With high quality quartz movement Powered by 1 AA battery Not Included UNIQUE DESIGN This crystal wall clock will be a good decor for your living roombedroomstudy roomofficeclassroom and also can be a perfect gift for your childrenparentsfriendsteacherscolleagues