Specifications︰ 5 functions,side control

functions:Hour,Day,Month,Minute,Second.
Outer size:23mm(Diameter)X5mm(Depth)
Windows size:7mm(H)x14mm(W)
Optional Object:For plastic watch casing user,ametal side contact plate must be
added to the module.
front/back/side control available.

also have diameter 29mm=sm-138