Here are some communication headsets to easily communicate with your mechanic.
Reference 34SCH-A8356
Brand: SMART-COM
Dual Ouput Charging Cable - SCH-A8356
Reference 34SCH-A8362
Brand: SMART-COM
Microphone Cover - SCH-A8362
Reference 34SCH-8286-13
Brand: SMART-COM
Smart-Com Headset - SCH-8286-13