Thanks for posting and welcome to the community! The SoundLink Revolve + Bluetooth speaker does not have the capacity to be tracked in any way, I would recommend checking in with the local police station in the area you believe you lost it to check to see if it has been handed in.
I would also encourage the community to offer any other suggestions or idea they may have for you.
Zoe C - Community Support
Thanks for reaching back out.
I am sorry but there is no way to track your speaker. I would recommend speaking with your local authorities if it has been stolen.