Do you wanna get it how to disassemble a Syllable bluetooth headphone set? Here you go!
Refer the Fig below and follow these instructions;
(i) Pull or pry out the outermost plastic cover with the padding; beware not to pull the padding!!
(ii) Remove four screws from the next (middle) plastic cover and pull it out; beware not to pull it far away from the set as you may break the thin cables to the speaker!!
Now the set is fully exposed for checkups, repair etc.