Do you have a question about the Sven AP-880 and is the answer not in the manual?
Advises against using headphones while driving or at high volume for extended periods to prevent hearing damage.
Highlights key attributes: 2*3.5mm connector, built-in amplifier, vibration subwoofer, rotary mic holder, leather ear cushions, and noise cancelling.
Switch to select the vibration subwoofer's operational mode (OFF, I, or II).
Wheel for adjusting the audio volume level of the headphones.
LED indicator that illuminates when the vibration subwoofer is active.
Cover for the compartment housing the batteries required for the vibration feature.
Instructions for opening the battery compartment and inserting two AAA batteries.
Guidance on using the control wheel to set the desired audio volume.
Explanation of the slide switch for selecting vibration modes (OFF, I, II).