Detail 01
Bi-directional Bluetooth MIDI
The adapter enables MIDI communication in both directions between the supported keyboard and a Bluetooth MIDI-enabled device.

Independent shopping perspective
Casio’s WU-BT10 adds Bluetooth MIDI and audio functions to the Casiotone CT-S400 and LK-S450. It supports two-way MIDI communication with Bluetooth MIDI-enabled devices, so the keyboard and device can exchange MIDI data. It also takes Bluetooth audio and sends it through the keyboard’s built-in speakers or connected headphones. For practice or device-based setup work, it keeps both MIDI and playback audio connected through the keyboard.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
The adapter enables MIDI communication in both directions between the supported keyboard and a Bluetooth MIDI-enabled device.
Detail 02
Audio from a Bluetooth-enabled device can play through the keyboard’s speakers or connected headphones.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is for the Casiotone CT-S400 and LK-S450.
Yes. Bluetooth audio can play through the keyboard’s built-in speakers or connected headphones.
Yes. It provides bi-directional MIDI communication with Bluetooth MIDI-enabled devices.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.