• HIGH-PERFORMANCE-Our batteries replacement are 100% Fit R21,R22,R51 and microlite receiver invisible fence collars,stable conductivity and excellent quality make it the best choice for pet lovers.
• WATER RESISTANT- The black O ring rubber is sure water resistant wtih collar or pet key.
• LONG SERVICE LIFE-Our Unique battery it is last as orignal battery or longer
• EASY TO USE-The 3 V lithium battery Coin slot is easy and quick for installation and take out,super convenient and safe for you!
• UNIQUE DESGIN--The new appearance colorful design is really unique

• Package Dimensions ‏ : ‎ 4.17 x 4.13 x 1.06 inches; 1.76 ounces
• Batteries ‏ : ‎ 6 Lithium Metal batteries required.
• Date First Available ‏ : ‎ June 28, 2020
• Manufacturer ‏ : ‎ PETZEE