1  User Information 
1.1  Purpose 
This document describes the features, functionality and usage of the P104 headphone featured by 
Kleer technology. It contains and specifies all relevant information about the headphone’s 
appearance and the environment it is designated to be used in. 
The P104 is designed to combine the comfort and acoustical performance of premium headphones 
with compliance to automotive requirements. 
Two variants are offered; one to be used only in the front and one to be used on every passenger 
seat in the car. 
2  Main Features 
 
  Small size 
  Folding mechanism for easy storage 
  Rich sound through 40mm transducer 
  High-quality digital audio with Kleer technology 
  Comfortable through ergonomic fit and gimbaled earphones 
  Adjustable from children to adults 
 
2.1  Product Description  
P104 is wireless stereo headphones, featuring Kleer technology for lossless digital audio 
transmission and operates in 2.4GHz ISM band. They are designed for individual entertainment in 
vehicles and meets the relevant requirements, such as widened operating temperature range, low 
battery consumption for longer battery life and low signal latency for lip-sync. The channel switch 
provides the facility to select between three different sources (front right, rear left, rear right). 
P104 is powered with two AAA batteries. Both, disposable and rechargeable can be used. An LED 
indicates the functional state, but also turns from green to red when the batteries’ voltage reaches 
the low level to signalize that they have to be changed soon. 
Acoustical characteristic is semi-closed with supra-aural earphones. Sound radiation to the 
environment is low, so that other passengers will not be disturbed. 
The mechanic design guarantees comfortable wearing constantly for several hours.