I'm Funasen, in charge of developing CSM Faiz Gear and Faiz Accel ver.2.

We have received some inquiries regarding the specifications of the "CSM Faiz Gear & Faiz Accel ver.2", "CSM Faiz Gear ver.2", and "CSM Faiz Driver ver.2", which began shipping this week. We have provided the information below regarding some of the inquiries we have received regarding the specifications of the "CSM Faiz Gear & Faiz Accel ver.2", "CSM FAIZ DRIVER ver.2", and "CSM Faiz Driver ver.2".
(PREMIUM BANDAI has also sent an email to all purchasers.)

Please read the below.
https://p-bandai.jp/b-toys-shop/special-1000016765/

In particular, the relationship between the BGM playback method and the wireless communication function has limited the range of play, and we apologize for any inconvenience this may cause. We apologize for the inconvenience, but we ask that you please play the BGM again after transformation to activate your special move.