Man wearing elegant black digital technology smart ring on his hand finger.
Schlüsselwörter
ring,
smart,
black,
elegant,
man,
hand,
hand,
finger,
technology,
communication,
business,
sensor,
reading,
biometric,
tracking,
track,
temperature,
mobile phone,
monitoring,
health,
futuristic,
future,
device,
fitness,
lifestyle
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