SAMSUNG GEAR S2 charging pinouts help!!!

hi guys i really need help with this device because i lost my base to charged and i need to know the id of the pin to try charging manual with wired cable direct to the pin so in any place of the network id nobody has the pin which is positive? which is the negative? someone could help and be the first person to post the model in question is SM-R380 thank you very much I really hope someone knows and can shared it ….. pd i upload the pin to can put the ids