In terms of usage.The top button is designed to be easy to use.The middle button as an example, the M has a duty to many open-closed, press to enter Bluetooth mode, press to stop music playback temporarily. You can also use a press phone calls.The-and + button beside it and is used to add a sound-reducing noise. A button is pressed and rubber material, not too soft and hard guys.
การแปล กรุณารอสักครู่..
