When charging

	When not charging, do not leave the included USB cable plugged into an AC adapter and the outlet or plugged into the USB port of another product. It may cause overheating, fire, or electric shock.
	Stop charging once it is complete. If charging is not completed after the specified charging time, discontinue charging. (S2 takes about 75 minutes, and S2 Plus takes about 105 minutes.) Overcharging may cause fire, burns, or injury.
	Do not use adapters with an output voltage other than 5V or an output current outside the range of 0.5A to 2.0A during charging. It may cause fire or burns.
	When connecting or disconnecting the included USB cable, make sure to do so in a straight manner. Additionally, when plugging into an AC adapter or the USB port of another device, check the orientation of the connector before inserting it. Inserting or removing at an angle, forcing the connector without checking the orientation, or applying excessive force in any direction while charging may deform the terminals, leading to a short circuit, overheating, or fire.
	Use the included USB cable and charge using the specified procedure. Charging with an unspecified procedure may cause battery leakage, heating, or rupture. Also, when charging overseas, use a USB charger that is compatible overseas.

	Use the included USB cable for charging.
	Once charging is complete, unplug the cable.