Attach this TransMount CRANE-M3 Expansion Base from Zhiyun-Tech to the bottom of your CRANE-M3 handheld gimbal stabilizer to add audio and Bluetooth connectivity. A magnetic connector with a locking pin secures the gimbal to the base. An integrated compartment with a USB Type-C port allows you to insert the separately available Bluetooth Control Module. The base also features a 1/4" input for an additional audio port.