Sony WF-XB700 Teardown by 52Audio.com

I generally check 52Audio’s teardown’s often but somehow missed this one, so putting it up now. The WF-XB700 is a mid-tier device, offering good quality sound, water and dust protection and a decent price.

The full teardown can be found here, I will not be posting all the photos, just a selection of ones I found interesting. If anyone wants to see a comparison to the WF-1000XM3, check it out here.

I will not be posting the case teardown, there is not much inside the case, apart from one PCB, battery and the charging pins. In order to open the case, the sticker on the bottom will have to be removed to reach the screws.

Here is the battery information, the model is 621733, there are some results on Aliexpress, but it shows it as 260mAh rather than 300mAh. The same battery is used in the WF-H800 case as seen in the teardown. I do wonder if one could install a larger battery, say 400mAh or 500mAh? Anyone know if such a thing would be possible? Or would it not work?

Next up is the microphone for voice calls. Both earbuds have one microphone each, which is used  for voice calls and interacting with your phone’s assistant (Google, Siri). Not sure if they also help reduce noise during calls. In addition on the left side we can see the white rubber seal that surrounds the cover which includes the Bluetooth antenna. The seal is vital to keep dust and water out.

The hole for the microphone does not appear to be above the mic, but rather beside it, not sure how that would affect call quality, but the WF-1000XM3 mic for calls is directly under the mic hole. Below is a closeup of the microphone.

The internal battery is again the same as before, Varta CP1254 A3. The battery is affixed to the case using double sided tape. If you are able to open up the earbuds, replacing the battery will be quite easy. You can find replacements on Ebay, Amazon or Aliexpress.

Something missing in the WF-1000XM3 is water and dust protection. The charging pins for example on the WF-XB700 have rubber seals around them. Would be great to see this in the upcoming WF-1000XM4.