Question regarding replacement fob for 2008 Prius

Hey Yall,

I recently got a 2008 prius that was imported from Japan. And finding out the main key fob drains the battery after like 3 days and the 'spare' doesnt work at all. And so I'm looking to get a new fob and use the chicken dance method to program it. The issue is that I cannot find my exact key model.

My fob is a black logo with two buttons, so no panic button. It is basically impossible to find the exact model (B21TA). I've found after market B23TAs and was wondering if anyone knows would these work? Or would a normal 2nd gen fob with the panic button work on my model.

Apologies if there was already a thread on this I could not find it.
Thank you.