It's the model 3's and the Zero W that have Bluetooth. Models 2 or below, and the "non W" Zero don't have it.
Re:Raspberry Pi WLAN setup
by Nullabillity on Saturday November 24, 2018 @11:13AM
(#18522656)
Bluetooth is built in from the RPi 3, the same model that also integrated WLAN.
Just saying perhaps including the word "Bluetooth" once in the description would help. Looking at this page the first time it wasn't so obvious what was going on or what it does.