Ear Phones and Ear Buds laboratories may also do the following tests:

Audio Quality Testing: Evaluates the sound output for clarity Testing
bass response Testing
and fidelity across various frequencies Testing
Battery Life Testing: Measures the playback time and charging speed to ensure they meet the advertised specifications Testing
Durability Testing: Assesses the earphones and earbuds' resistance to stress Testing
impacts Testing
and environmental factors like moisture and dust Testing
Comfort and Fit Testing: Involves user trials to evaluate the ergonomics Testing