This USB charging cable is used for Samsung Galaxy Fit E SM-R375 only, doesn't fit Samsung Galaxy Fit 2019 SM-R370. You can charge your Samsung Galaxy Fit E SM-R375 on any USB socket(except QC 3.0 and phone's adapter), like computer, USB adapter, or other with USB socket. The Samsung Galaxy Fit E SM-R375 charger dock can protects your smartwatch from overcharging. Samsung Galaxy Fit E SM-R375 charging cradle is easy to be used and carried.