Yes, the microphones on Lark M1 and Lark C1 are the same, so the mic of Lark M1 is supported by the Larc C1 Receiver.
Please follow the steps below to pair them.
- Make sure your Lark M1 is the latest firmware version, if not you can upgrade the Lark M1 to the latest firmware first: Upgrade For Lark M1
- Pair the mic of Lark M1 to Lark C1 Receiver: How to pair the receiver and microphone?
- Connect Lark C1 to the phone to check if the firmware is the latest and do the upgrade.