Applicable Model: Compatible with PetSafe RFA-67 RFA-67D-11 batteries, not available for other models which not mentioned. Please carefully check the model before purchasing. Reliable and Long Lasting Batteries: Battery can last nearly 3 months depending on usage frequency. Durable replacement pet collar batteries: 10 Pack 6 Volt RFA-67 batteries, excellent quality for pet collar replacement batteries. Easy to Install: Easy locks into place with the twist of a coin, very convenient for daily use. Water-proof RFA-67 Battery: Your pets can enjoy himself, get wet in the grass, play in the rain or mess with the sprinkle and you can have a nice day with your lovely pet. RFA-67 RFA-67D-11 6 Volt Pet Collar Replacement Batteries 10 Pack, Ultra Long-Lasting & Waterproof Compatible with PetSafe 6V Lithium Battery Specific Dog Receiver Collars