After extensive research, there are many models and some suppliers in the market, but was either only one or only the other desired onboard. In particular, the "portable radio-typical" look who offer very few in the wireless segment.
Improvements to the previous model WFR-28D:
1. portable radio-typical handle
2. 6 x Baby batteries, now lasts much longer by (12-14h)
3. Stereo speakers (not a must!)
4. Lautstärekeregelung via rotary
Details see here: [...]
Wireless Setup is as easy as the WFR-28D
Although instruction booklet in English, but there's also a PDF in German ->
[...]
Sangean app to remote control in Googel-play goals for both Apple and Android (Code in Initial 1234 !!)
In summary:
Currently, the best and most mature with the appropriate amenities, which are available on the online market!