Can't I use Kakao Talk just with Apple Watch?

I'm trying to buy an Apple Watch 4.

It's a cellular version.

I'm curious about using Kakao Talk.

I can reply to Kakao Talk, but

I just want to send you Kakao Talk first, but I don't know how to do it.

Or do I need to install an additional app?

2335 2018-11-07 Gentleman

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