10PCS RFA67 (6V) are compatible with several training collars, anti-escape collars, anti-bark collars, etc. Easily to install in pet collars, teach your pets to control barking and stay in place. Specifications Battery Type: RFA67 Batteries (6V) Voltage: 6V Capacity: 150mAh Size: Diameter: 27.6±0.2mm; Height: 12.6±0.2mm Weight: 10.4g for each piece Compatible With: PIF-300, PIF-275-19, PUL-275, PIG00-13661, PBC-102, PBC-302, PBC-300 and PUSB-300. Wide CompatibilityWidely compatible with most dog training collars: Deluxe Anti-Bark Collar, In-Ground Fence Systems, Wireless Dog Fence Systems, etc. (PIF-300, PIF-275-19, PUL-275, PIG00-13661, PBC-102, PBC-302, PBC-300 and PUSB-300, etc.)Easy to install in pet collars, teach your pets to control barking and stay in place.Waterproof and Rainproof - More EnjoyableMade of waterproof and rainproof materials, your pet can have fun, get wet in the grass, play in the rain or play with the sprinkler. You can spend a happy day with your lovely