You can find the ESN (Electronic Serial Number) on the back of your SkyCaddie.
The ESN is also shown in the CaddieSync status bar when you follow these steps to sync your SkyCaddie.
2. Connect your SkyCaddie.
3. Press the
CaddieSync searches for the ESN (serial number) of the SkyCaddie and connects to the SkyGolf server. When the SkyCaddie is synced, your ESN appears in the lower status bar.