VIETA PRO It Plus VHP-TW28 - Key Definitions - Basic Operations; Power On and Sync; Power Off; Answer Call

Key Definition
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Power on
When the earphones are removed from the
case and they will automatically turn on and
sync to each other
Power o
The earphones will power o directly when
you put them back into the charging case
Answer call
One time touch L side or R side
End call / Refuse the incoming calls
Long Touch 2seg on L side or R side
"Interrupt dialout calls"
One time touch L side or R side