I thought there was a headphone jack and Bluetooth and more. But he made only the Bluetooth and the waves are very troublesome for us. Then we change to a model below but with headphone jack. Otherwise the sound is very good and pure enough. The volume is very good and you hear the caller even though the noise next door. For those that Bluetooth waves do not bother it is absolutely perfect. But you must already check whether the Bluetooth bothers you and causes a slight headache after half an hour. If yes then opt for a jack, while there still exists because Siemens are the only ones to make more. So if you find a serious study on the Bluetooth then made to know because in doubt abstain.