When first taking a look at the ATVS Sirius Pod Mod Kit, it's very similar to the SXK Bantam Box, but is quite different. However, it does have some similarities to an all in one (AIO) kit such as the ability to use replaceable coils.
It does sport a rather compact size, but still packs a huge 1,000mAh battery, so you can definitely get through most, if not all day of vaping on a single charge. In addition, it has full wattage control, and will provide the vaper between 5w to 30w. This is pretty impressive given its size.
