This is a high-performance replacement miscellaneous for the Midland M99, guaranteed to meet or exceed the OEM specifications of your original. The frs radio battery is 1.73 x 1.64 x 0.43 inches with an output of 4.8 volts. The chemistry is NI-MH at 700mAH capacity. Manufactured by Empire Scientific, model number FRS-013-NH. We offer a 1 Year Warranty with purchase. See this product elsewhere at a lower price? Call or email us; we have a Price Match Guarantee.