The Apple Watch Magnetic USB Charger (0.3m/1-Ft) for Apple Watch All Series. White cable color. Model: A1923, Short version.

Make charging your Apple Watch utterly effortless. This solution combines the MagSafe technology with inductive charging. It's a completely sealed system free of exposed contacts. It's very forgiving, requiring no precise alignment. You simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically.
Model Number: A1923