With what I could fine online currently and with my personal thoughts and assumptions ( I could be wrong, pls pardon me if any)
1) BWZ is not an upgrade to BW2
2) BWZ is just a New model to Bullet wireless series (May be a Lite Version )
As we know BW2 comes with:
a)Two Knowles Balanced Armature Drivers.
b)10mm Drivers.
c) Qualcomm aptX HD.
d) Qualcomm cVc Noice cancellation Technology.
I don't think any of the above is used in BWZ,
As non of the above features where mentioned during the launch or on the official site other than 9.2 mm driver used in BWZ. That could be the main reason for cost difference.
Conclusion

Only Difference mentioned)
-----BW2-----
14hrs playback
10mm driver
audio Latency Unknown ( more than 110ms I suppose)
No IP55
Two Knowles Balanced Armature Drivers.
Qualcomm aptX HD.
Qualcomm cVc Noice cancellation Technology.
99USD launch price
View attachment 1285174
-----BWZ-----
20hrs playback
9.2mm driver
audio Latency 110ms
IP55
no Knowles Drivers
No aptX HD
No cVc
(replaced with something called Superior Base Tone)
49USD launch price
View attachment 1285182
I think BW2 would definitely still perform superior to BWZ.
Again, as mentioned earlier, it's all my assumption.
we need to wait until we get clarification officially.
i have raised the same question under clarify also.
let's wait for it.
Thank you [e]1f60a[/e]
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