Use APKPure App
Get Wear File Transfer old version APK for Android
Mang File Transfer
Copy files from/to the memory of your Android wear watch with this app.
The application will be installed in your watch as soon as it is connected to your phone via bluetooth.
Once installed you need to connect your watch to a WIFI network to use this application. At the moment this is the only supported connection.
Use any FTP client (also Windows File Explorer) to copy/read files to/from your watch, just enter the address on the screen when the server is running.
Your watch will not connect to a WIFI network while connected to your phone via bluetooth.
TODO:
Support also Bluetooth connection.