This rechargeable digital camera battery is suitable for Pentax Optio 550 555. Featuring capacity of 2200mAh， this high-capacity and rechargeable Li-ion battery with premium battery cell will ensure optimum performance to save your time and money. This digital camera battery is a good choice for you!                                    Features            Extra power for your digital video camera / camcorder<br>High capacity / rechargeable Li-ion Battery with premium cell<br>Never run out of battery power when you&acute;re just about to capture the perfect moment<br>Time to get extra power for your digital camera<br>                                                            Specifications            Voltage    3.7v    <br>Capacity    2200mAh    <br>Compatibility    Fujifilm FinePixF11 Fujifilm FinePixF10<br>Pentax Optio 450 Pentax Optio 500 Pentax Optio 550<br>Pentax Optio 555 Pentax Optio 750Z Pentax Optio MX4    <br>Dimensions    2.09" x 1.38" x 0.43" / 5.3 x 3.5 x 1.1cm (L x W x H)    <br>Package size    4.09" x 2.20" x 0.63" / 10.4 x 5.6 x 1.6cm (L x W x H)    <br>                                                            Package Includes            1 x D-LI7 Battery for Pentax Optio 550 555<br>                                                            Extra Info            Not all compatible models are listed here.<br>Please find information according to the models of cameras and standard batteries， or contact customer service staff for more details.<br>