Airdots have the same functionality as those $1000+ apple airpods (including the smart touch) for only $249. They have 2 mic's I think, one in each ear.
I use the Jabra elite 65t that has noise cancelling, the microphone works well with phone, messenger, whatsapp calls etc. Play and pause for media and there are volume buttons on the earphones. I much prefer volume buttons on the earphones than having to search for the phone in a bag etc.
Amazon link: https://goo.gl/hFtC8e
A little pricey at about HK$1,200, but available in fortress too.
I have heard good things on the Jabra elite 65t for making calls while outside. I honestly don't know how well it works though underground in the MTR. I personally wouldn't use them for music while commuting
hey pin: consider your use case scenarios
If I am running to the store and back in 15 minutes, I'll just grab the apple wired headphones and go. Not great audio, but I'm just listening to a low resolution pod cast and I can answer the phone.
If I am on a commute and not expecting to interact with the world, then I use the specialized fancy in ear headphones and listen to music while reading.
If I was on tons of calls, then I can see the wireless Jabra helping. For me though I would be using that Jabra more at the office or home. If you were talking all the time on the MTR, you would be the annoying guy talking the whole time on the MTR.
When you get a call the earphones have a female voice saying whos calling with their name from your contacts or the phone number, and to answer the call just say "answer", or "reject". Again no need to search for your phone!
I specifically mentioned the MTR because the OP is already dealing with
1) rush hour so heavy signal usage
2) 2nd tier wireless carrier
so that means the mobile to headset has to be super solid