Providing that your Hammer device is newer or the same as the HAMMER Explorer PRO, your phone should be compatible with an eSIM.
To check your device you can follow these steps.
Check My Hammer Model
1. Go into Settings.
2. Scroll down until you see the option About phone and tap into it.
3. Once in this section you can see what the Device name is. As you can see from the photo below, this device is the Hammer Blade 3.