Meant can opener, apologies.
The flat head isn't a micro on yours - the corkscrew enables a micro flat head to be carried (they're designed to nestle inside the worm of the corkscrew - extremely useful for Rolex bracelet links and glasses screws). Plus the corkscrew is just handy for its designated role, but I admit it's secondary to the screwdriver carrier function in this age of screwtops.