Ultrasonic collar Battery for MS-4/5 Pet Collar 2PK
- Small, Lightweight
- Powers Your MS-4 and MS-5 Ultrasonic Collar for Up To 3 Months
IMPORTANT: Please make sure to always use genuine High-Tech Pet ® replacement batteries. There are cheaper versions with battery chemistries that can damage the collar circuitry. Damage from use of off-brand batteries will void your product warranty.