Provided is a handle assembly for carry-on luggage. W is selected from the group consisting of and Z1, Z2, and Z3 are independently selected from the group consisting of substituted carbon and nitrogen. A catalyst may be selected for its solubility at a detected pH level of the aqueous mixture. The second sound pick-up device has a second microphone array, and the second microphone array is a far-field non-uniform microphone array. Therefore, the extending connector can be electrically connected to PCB via the extending PCB.