The pebble is designed with soft rubber to wrap around the band for stability during running.
If you encounter difficulty in removing it, please follow these instructions:
1. The band has a curved surface with a quick-release groove. Use your fingernail to gently insert into the groove and pull the band;
2. If you still find it hard to remove the band even after locating the groove, open the user manual and take out the green pry piece (found in a transparent bag inside the manual). Gently push the pry piece forward into the groove. Use and store the pry piece carefully for future use.