Specifications︰ 29mm LCA,Back control.
(with music/voice sound output available)

functions:Hour,Minute,Second
Outer Size:29mm(Diameter)x6mm(Depth)
Windows Size:19mm(H)x19mm(W)
Optional Object:For plastic watch casing user,a metal side contact plate can be
added to the module.

front/back/side control available.