Replacement empty case?

hello, i have a problem with the contact point on my gearfit case, it terminals are broken from corrosion, please help me with a link where i can get the empty case with charging terminals. thank you.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 2
crwdns2934285:0crwdne2934285:0