Sena Bluetooth SMH10 v5.0 User's Guide - Manual (Page 9)

SMH10
10
6. To remove the main headset from the speaker-microphone clamp
unit, hold the lower part of the speaker-microphone clamp unit with
your thumb and gently press down the hook on the upper part of
the headset main unit with your index finger until it clicks out. You
may have to do this to charge up or to carry the headset main unit.
4. POWERING ON/OFF AND CHARGING
To power on and off the headset, you don’t need to press and hold
any button for several seconds. Just short press the Jog Dial and
the Phone Button simultaneously, and you will get quick on-and-off
convenience.
4.1 Powering On
Press the Jog Dial and the Phone Button at the same time for about
1 second to power on. The blue LED turns on and you will hear
ascending beeps.
4.2 Powering Off
Just short press the Jog Dial and the Phone Button simultaneously,
you don’t need to press and hold for a few seconds. The red LED
turns on for a while until it turns off completely and you will hear
descending beeps.
4.3 Charging
The LED turns on red while charging, and turns to blue when the
headset is fully charged. It takes about 2.5 hours to be completely
charged.