Take a good look, Volume button, Indicator light (led) – Plantronics M55 User Manual
Page 2: Micro usb charging port, Call button, Power switch
VOLUME BUTTON
• Volume presets (1 tap per level change)
INDICATOR LIGHT (LED)
• Charging (solid red until charged)
• Very low battery (3 red flashes at powering on)
• Pairing mode (repeating red/white flashes)
MICRO USB CHARGING PORT
• Use with the AC wall charger:
1 hour before first use
2 hours (full charge)
• Do not use headset while charging
D
C
E
TAKE A GOOD LOOK
CALL BUTTON
• Take a call (1 tap or say “Answer”)
• Reject a call (1-second press or say “Ignore”)
• Redial (2 taps)
• Initiate phone’s voice-dialing
(2-second press until tone is heard)
• Reconnect lost Bluetooth® connection (1 tap if
the headset doesn’t automatically reconnect)
• Activate pairing mode after initial set up
(press until red/white LED flashes)
• Exit DeepSleep™ mode (1 tap)
POWER SWITCH
• On (slide back)
• Off (slide forward)
A
B
Your headset may look slightly different than
the illustration, but will still work as described.
A
B
D
E
C