CASIO WU-BT10 Bluetooth Adapter Manufacturer: CASIO Function: Adds Bluetooth functionality to digital pianos when attached. Compatible Models (from Casio HP): PX-S7000, PX-S6000, PX-S5000, PX-S1100, PX-S3100, AP-750, AP-550, AP-300, AP-S450, AP-S200, AP-S5000GP, CDP-S300, CT-S1, CT-S1-76, CT-S400, CT-S500, CT-S1000V, LK-520, LK-526, LK-530 Year of Manufacture: 2021 Included: Original box, warranty and other documents (warranty period expired) Packaging: Will be shipped via Yu-Packet Post in a thin cardboard box to save on shipping costs. The original box will be folded and included. (Additional Information) I used this adapter with a Casio CT-S1 digital piano, which I purchased separately, to utilize the Bluetooth audio function. I recently sold the digital piano, so I no longer need this adapter and am putting it up for sale. It has been lightly used and is in good condition.