Eh? Why is your old version of HHKB still wired

I've always wanted to buy a lightweight, Bluetooth-switchable electrostatic keyboard because it's best to have the same keyboard in the office and at home for work. After comparing realforce, Ningzhi, and HHKB, I decided to go with HHKB. 1️⃣Realforce doesn't seem to have a 60% layout, and I find the 87 keys too big. 2️⃣Ningzhi has a great cost-performance ratio, but after watching reviews, its performance may not be as good as realforce and HHKB. 3️⃣For HHKB, the old version doesn't have a Bluetooth module, and I don't like the battery compartment in the new hybrid version. However, I saw that someone modified the HHIKB pro2 type-S module to implement Bluetooth and charging functionality on the previously wired pro2 type-S. Isn't this a keyboard that perfectly meets my needs? Small and lightweight, with Bluetooth switching, long standby time, quiet, and tactile. Picture 4️⃣ shows the keyboard when I bought it, before modification, with the Bluetooth module and battery. Picture 5️⃣ shows the original keyboard module removed as per the instruction manual; the green one is the original keyboard module, and the blue one is the new Bluetooth module. Picture 6️⃣ shows the battery and the new keyboard module installed. Picture 7️⃣ shows that the charging port has also been changed to type-c. After the modification, I've been using it for almost two months, and it's now my main device. Here's a summary:

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