I have acquired some Bose Wireless Headphones with Bluetooth. I live in Australia but the phones may have originated anywhere on the planet. I am trying to find the model as the sound is a little tinny on connecting with both my phone and tablet, and there might be a firmware update.
I have searched the lists of models to no avail.
There is no serial number on the set, the only label is a small round with numbers around the outside and ZM 2017 in the centre. It may have nothing to do with the unit.
The set is black with a narrow bronze band around each earpad. The sides are labelled on the holding stirrup L and R.
The speakers backs are totally flat, completely round, with Bose printed on them. The plastic is finely grooved in very narrow concentric rings from the centre to the outside, like an old record. If you shine a light across the surface it creates a narrow reflection line like 2 thin triangles expanding from the centre.
There are 2 small rectangular bronze lined apertures at the top of each ear piece with fine mesh.
Any help would be appreciated.