This Keyboard works great. I lost the ivory battery cover but I replaced it with the black one.

The HHKB Professional Keyboard HYBRID PD-KB800WNS is a compact keyboard in an ivory color, featuring a QWERTY layout and Bluetooth connectivity. It is designed for quiet typing with its quiet keys and does not come with a charger included. Made in Japan, this English language keyboard is perfect for those who value quality and functionality in their typing experience. The unmarked PFU LIMITED Type S adds a unique touch to this professional-grade keyboard.