Speaker and charging station can be equally use with my Sony Xperia Tablet Z3 Compact as well as with my Sony Xperia Z Ultra. Unlike other chargers scratched this not the back of the smartphone. Especially cool: From the Sony SmartWatch 3 of you can control volume and track selection and needs, neither the phone nor the loudspeaker touch. Speakerphone with the phone function is so perfect that no caller noticed the difference.