Bluetooth and Wi-Fi items in Power Saving are ambiguous
Under Power, the Bluetooth item is listed as:
Power Saving
Bluetooth [On|Off]
Turn off Bluetooth to save power
This could mean "Bluetooth power saving [on/off]" - i.e. enable some sort of Bluetooth power-saving feature, instead of its actual meaning of "enable/disable Bluetooth entirely".
Renaming the item to "Enable Bluetooth" (and possibly the description to "you can turn off Bluetooth to save power" would remove the ambiguity.