Brand new never used as pictured  
SportDog Replacement / Add-A-Dog Collar
Replacement collar for the FieldTrainer 425-425S Add-A-Dog Remote Trainers

Please Note: Includes only the collar as pictured... please make sure you have a compatible charger. 
The last picture shows what your charger should look like.

Compatible charger available link below :
https://ebay.to/393287E

Manufacture owner manuals link below :
https://www.sportdog.com/media/downloads/SDR-AF_SDR-AC_SDR-AS.pdf