A viewing device may be utilized to facilitate viewing of a scene or event. The vertical straps are rubber or similar shock absorbing material, arranged in a rectangular pattern and secured at their ends to a percussion instrument shell using a series of isolating lug attachments. Target data of the second duplicate elimination process is narrowed down based on the acquired information. Preferably, the axial movement of the operating part is guided so as to include a axial movement stop. The received data message is sent, via a second network interface, from the second antenna system to the second network device.