Vortex Viper HD 10x50's plus Vortex bino strap. Retail for $699 for the binos and $28.00 for the strap, I will sell both TYD for $425.00. I bought a set of Vortex Viper HD's last summer. I was going back and forth on the 10x42's and the 12x50's and ended up buying the 10x42's. I am going to buy the 12x50's so I am selling my Vortex 10x42's.