Samsung Gear S2 Classic User Manual page 10

Basics
Make sure the Gear's microphone is not obstructed when you are speaking into it.
Do not allow children or animals to chew or suck the device. Do not disassemble,
modify, or repair your device. Magnetic stripe cards, including credit cards, phone
cards, passbooks, and boarding passes, may be damaged by magnetic fields.
Wireless charger dock
Wireless
charging
surface
LED indicator
3
USB charger
port