Wireless In-EAR 

Headphones Wireless system with Bodypack.

Allows you to have an wireless In-Ear Monitor
to hearing any instrument (Guitar or Bouzouki or Violin or Clarinet)

The wireless set provides for freedom of movement
without loss of audio quality.
It is well made with excellent acoustic performance.

Dimensions : transmitter and receiver: 95 x 65 x 25 mm /// 80gr

specifications  
Receiver  and Transmiter powered by 2 X AA battery.
Output with jack 3.5mm. 
Comes with volume control and secure jack 3.5mm.
Also an elastic base for Receiver are available .
UHF Wireless coupling 50m