This is a high-performance replacement Smartwatch battery for the MOTOROLA WX30 With Tool,, guaranteed to meet or exceed the OEM specifications of your original. This Smartwatch battery is 1.42 x 1.1 x 0.138 inches with an output of 3.7 volts. The chemistry is LI-POL at 300 mAH capacity. Manufactured by Empire Scientific. 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.