Renowned for quality, these MN21 key fob batteries provide long-lasting performance for various applications, from garage door openers to security systems. Trust Duracell for reliability and extended range, making it the ideal choice for your electronic needs. Trusted Duracell quality  Reliable long-lasting performance  Versatile use for key fobs, garage door openers, and security devices  Capacity: 38mAh  Voltage: 12v _