This pump's sleek design is matched with a host of advanced features that you would expect in a modern device. The beauty of the t:slim X2™ insulin pump is that it is up to 38% smaller than other pumps, 1 yet it can hold a surprisingly large amount of insulin (up to 300 units). With its color touchscreen, the t:slim X2 pump is also easy to ...Control-IQ Technology‧Accessories‧Tandem Device Updater‧Infusion Sets‧Basal‧Tandem Diabetes Upgrade Program.