GeekerMart · 極客谷 Sennheiser HD 4.50 BTNC Wireless Noise Cancelling Over-Ear Headphones Key features: https://www.youtube.com/embed/IfkakS7eQ8c - Bluetooth 4.0 and aptX technologies to deliver exceptional wireless sound quality..Connectivity Techn Product #: geekermart-Sennheiser HD 4.50 BTNC Wireless Noise Cancelling Over-Ear Headphones Regular price: $HKD$690.0 Available from: GeekerMart · 極客谷In stock