Speaker
Charging terminals 
Heart rate sensor
Microphone
●● Ensure that the strap is kept clean. Contact with contaminants, such as dust and dye, can cause stains on the strap that may not come out.
●● Do not use a screen protector which causes touch screen sensor malfunctions. ●● Water may affect the touchscreen operation, ensure it is dry before use.
●● If the speaker is wet, sound may be distorted. Ensure that the speaker is dry.
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