The assembly is suitable for people older than 14 years and need about 3-5 days.Recently some customers raise a question that it is too hard to assemble it.For this question,we will tell you do not be afraid of this chanllenge.You will get the joy after you have finished assembling it. Finished Product Size:13.2*8.9*10.8 inches Package includes all the furnitures and accessories in the pictures, including the dust proof cover and music box IMPOTANT NOTE:IF ANY QUESTIONS OR MISSING PARTS FOR ASSEMBLING,please write to us for help.We will right here waiting for you to solve your any problem.The instruction is in English.Each steps has been clearly showed in the instruction with pictures to guide you to DIY the house. It's very perfect gift for the Christmas.You could do it by yourself to make the gift more meaningful! Note:Glue and batteries are not included in the package because they are not permitted to ship by Air Transportation. So please prepare it by yourself.You?d better choose Silicone Liquid Glue.And for the battery,you could choose 3 pcs of LR44 and 1 pair of AA batteries