OpenRock is offering up to 50% off on their top of the line headphone models for late Xmas gifts.OpenRock S features air conduction technology, adjustable memory silicone ear hooks, and 16.2mm dynamic drivers.OpenRock X is a luxurious model with a dual-axis precision pivot design, customized 14.2mm dynamic drivers, and four beam-forming microphones.Discount codes OPENROCKS and OPENROCKX can be used on Amazon to avail the discounts.