USB Charging Cord for FK78 FK88 X7 X8 X6 2Pin 3mm/4mm for Smart Watch Charger Li
For T500 T500+ T500s T600s FK78 FK88 X7 X8 X6 F18 T5s. 5V USB charging for head, which can be used for notebook computer, etc., to the stability of the connection and keep the connection uninterrupted.