Welcome to the Nothing community! If you’ve just purchased your device you’ve likely got Nothing Ear - the new model for 2024. You can verify this in two ways - firstly, the stem of the ear both on the product itself and the packaging will either have “ear (1)”, “ear (2)” or just “ear”. Secondly, cross check the model numbers on the packaging for Ear:
B171 - Nothing Ear (new/2024)
B155 - Nothing Ear (2)
B181 - Nothing Ear (1)
You can find out more about the renaming here: Changing the name and the game
ETA: You could’ve also got Ear (a) which is also new, within a more budget range. Model B162. You can always verify your purchase using the serial number found on your packaging and case.