Samsung SM-R510 User Manual page 22

Using the earbuds
1
Hold the upper and lower sides of each earbud and remove them from the charging case.
2
Check the direction of each earbud.
3
Hold the earbuds so that you see the imprinted direction marks, and insert the earbuds
into your ears until they fit comfortably in your ears.
The touch-sensitive sensors will detect that you are wearing the earbuds when you put
them on. Then, the earbud will emit a sound informing you that the earbud is detected.
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