Wired
The Walkman Blog posted an image of Sony’s completely wireless noise canceling earphone, WF-1000XM4, on the left and right sides of the main unit and in the charging case.
Image of WF-1000XM4-like body left and right and charging case
So far, The Walkman Blog has posted images of the main body and package of the WF-1000XM4.
It has also been revealed that the device with model number YY2948, which also has a stamp on the device shown in this image, has been certified by the Federal Communications Commission (FCC).
Is it faster charging speed than WF-1000XM3?
From FCC credentials, the size of the charging case is expected to be 28.1 mm x 64.44 mm.
On the bottom of the charging case, the output is stated as 5V = 140mA, which is an increase from 5V = 120mA of the WF-1000XM3, so the WF-1000XM4 can be played for about 120 minutes with a quick charge of 10 minutes. The Walkman Blog expects it to be.
Major design changes from WF-1000XM3
If the image posted on The Walkman Blog is for the WF-1000XM4, the model seems to be significantly redesigned from the WF-1000XM3.
The site states that the WF-1000XM4 may be announced within a month.
Source: The Walkman Blog
(FT729)
Source: iPhone Mania