2/15/2019
Sennheiser Serial Number Location
Sennheiser Serial Number Lookup
May 20, 2015. Check it's authenticity by using the Product Authenticity Portal located on our website: http://qr-sennheiser.com/index.php?id=5&L=1&id=5. 
Sidebar 1: Specifications Sennheiser HD 600 headphones: Open-air dynamic diffuse-field-compensated circumaural headphones. Transducer: dynamic diaphragm. Frequency response: 16Hz-30kHz, ±1dB. Change corel draw x7 serial number.