This is a high-performance replacement cordless battery for the Muraphone BBGTA150, guaranteed to meet or exceed the OEM specifications of your original. The cordless battery is 1.95 x 1.24 x 0.45 inches with an output of 3.6 volts. The chemistry is NiMH at 700mAH capacity. Manufactured by Empire Scientific, model number CPH-514. 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.