Where to buy IEM, Headphones, Cameras in Mong Kok Hong Kong (Sim City)

Where to buy IEM, headphones, cables, camera accessories in Mong Kok Hong Kong at Sim City. We also go to Ice Lab as to get an ear impression for my dropped empire ear zeus.

Street address is 47-51 Shantung Street in Mong Kok, 3 floors of shops.
https://www.google.com/maps/place/Sim+City/@22.3178578,114.1679346,17z/data=!3m1!4b1!4m5!3m4!1s0x340400c7aedc9c33:0x8d66620b6a9d9636!8m2!3d22.3178578!4d114.1701233

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