Video by Casio Music Gear via YouTube
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The WU-BT10 Bluetooth adapter is the perfect accessory to your Casiotone CT-S1. It adds two significant capabilities to the Casiotone CT-S1. First it allows you to stream audio to the built-in speaker system so you can listen to or play along with music from your phone or other device. Second, it functions as a Bluetooth MIDI adapter allowing you to connect and use the CT-S1 wirelessly with your favorite music applications.
The WU-BT10 is also compatible with the Casiotone CT-S400 and LK-S450
For more information on the WU-BT10 visit:
https://www.casio.com/products/accessories/for-musical-instruments/wu-bt10