The Perdix straps fit the Teric.To the OP, I have not seen very many Terics for sale.
I have the Perdix AI. I bought it right before the Teric was released. I really like the bungee mount feature that comes standard with the Perdix (along with straps) and the larger screen and buttons. Not sure if bungee straps are included with the Teric? I have seen aftermarket kits.