This is a high-performance replacement digital battery for the Sony DSC-RX1, guaranteed to meet or exceed the OEM specifications of your original. The digital battery is 1.68 x 1.15 x 0.35 inches with an output of 3.6 volts. The chemistry is LI-ION at 1100mAH capacity. Manufactured by Empire Scientific, model number BLI-431. 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.