Do you have a question about the ZEKLER 412 RDB and is the answer not in the manual?
Instructions for operating the AM/FM radio function, including volume and station selection.
Details on the 'active listening' feature, its operation, and potential warnings.
Guide for connecting external audio sources via the 3.5 mm input and associated warnings.
Step-by-step guide for establishing a wireless link between the headset and another Bluetooth device.
Instructions on how to manage incoming and outgoing calls using the headset buttons.
Guidance on playing music wirelessly via Bluetooth and controlling playback.
Information on how the headset indicates low battery status and the need for charging.
Instructions on how to charge the headset's batteries using the provided USB cable.
Overview of the headset's parts and their identification numbers.
List of available accessories and replacement parts for the hearing protector.
Procedure for replacing the ear cushions and foam for hygiene and performance.