I've just taken delivery of a Mitsubishi PHEV 2018 (import through a dealer) but was surprised to see that there are no steering wheel buttons for placing/ending a call, or activating voice control of Android Auto.  I'm assuming that I'm looking at a battery-operated Bluetooth gadget that somehow attaches to the steering wheel.  Does anyone have experience or recommendations?

The cars are refitted with a Pioneer head unit when they are imported (SPH-DA160DAB).