The square electronic dice cup is battery operated.It's made of plastic, lightweight but firm.It is use for a lot of games,such as play monoply and a wholelot dice gmae.You will enjoy your game more with it.

item name: square electronic dice cup with lid
weight:0.56g per pc
size:17cmx16cmx8mm
packing:
16 cards per ctn
ctn size:35.5x33x32.5cm  8/9kgs