KronosBlade Official SmartWatch Store | Kronos Blade

4、SIM card installation:open the SIM card back cover, open the SIM card fixed cover and put the SIM card into the watch and lock the SIM card to cover, then restart. (Do not open the back cover of the main unit. Only open the back cover of the small SIM card. Otherwise, there may be no Legal warranty) The watch uses a contact charging method. ................
................