See also:

Adjusting the volume
Turn the volume button while giving an instruction until the desired volume is set. ▷ The volume remains constant even if the volume of other audio sources is changed. ▷ The volume i ...

Requirements
▷ The mobile phone is suitable. ▷ The mobile phone operating system supports the software applications of Apps. ▷ Software applications are installed on the cell phone and read ...

Active seat
Active adjustment of the seat cushion's contours reduces muscular tension and fatigue to help prevent lower back pain. Press the button. The LED lights up. ...