Created to deliver a superior Hi-Fi sound experience with deep dynamic bass, the HD 450BT feature active noise cancellation to ensure enjoyment without distraction. Sound quality is assured by the latest wireless technology including Bluetooth 5.0 and AAC, AptX codec support with AptX Low Latency for perfectly synchronized audio when watching videos. The Sennheiser Smart Control App makes it easy to customize the sound via the equalizer or engage podcast mode for improved speech clarity. Active Noise Cancellation. Sennheiser’s Smart Control App allows for customization of sound via equalizer and a podcast mode for optimized speech, as well as battery status, user manuals and firmware updates. Superior audio with AAC, SBC codec and additional AptX Low Latency support. Headphone FeaturesSkin-friendly Polyurethane ear pieces. 1.45m cord length. Single sided, rounded cord. Detachable cable. Connection: wireless. Bluetooth enabled for a wireless connection to your devices . With a 3.5mm jack connection. 3.5mm jack . 32mm driver. Adjustable headband. Foldable. Active noise cancellation. 75% noise cancellation. 10m range. Carry case. Bass control. Compatible with universal smartphones. Batteries required 1 x LiPo battery (included) . Rechargeable battery. 30 hour battery life. 120 minute charging time. Fast charge to boost battery life. In the box: HD 450BT Headphones, USB-C charging cable, 2,5mm to 3,5mm audio cable, carrying case. General InformationModel number: 508387. Manufacturer’s 2 year guarantee. EAN: 4044155249699.