The Mission Battery Base is a white portable dock designed specifically for the Amazon Echo 4th Gen MC50W. With a VESA hole pattern of 100 x 100 mm, this battery dock from China allows for convenient and charging of your smart speaker. The sleek and compact design of the Mission Battery Base makes it a practical accessory for your home, ensuring that your smart speaker is always ready to connect and play. Ideal for those looking to enhance their smart home experience with a reliable and efficient battery dock.