Description:Foldable clock with 8-digits calculator battery: 1*aa &button cell. Unit size: 13*11*3. 4cm. Packing: 40pcs/ctn/48*26*31=0. 0387cbm/14kg/g. W. This item is quite useful and unique, for more detail about it, pls feel free to contact me, i am glad to quote you detail price upon receipt of your enquiry.