Differences between S/B/B Plus verion.
The S version can only be used in wired mode(Type-C).
The B and B Plus versions could be used in multi-modes (2.4G/Bluetooth/Type-C).
The B and B Plus versions use different chips. They have the differences below:
1)The B Plus version could use Akko Cloud Driver in the 2.4G mode to check real-time battery level.
2)The B Plus version supports wireless standby time and key sensitivity setting in Akko Cloud Driver.
3)The B Plus version supports Audio Visualizer in the Windows Akko Cloud Driver.