Features:
1) Diameter: 9.4cm
2) Height: 2cm
3) Material: ABS
4) Functions: a switch at bottom to activate fast-blink, can flash when weight
5) For changing batteries: replace 3 batteries directly at bottom 

Inner packing: 
1pc/color box

Outer packing:
120pcs/ctn
Carton dimensions: 57 x 32.5 x 22.5cm
N.W.: 9.5kg
G.W.: 10.5kg