Wireless over ear headphones. Listen in comfort whether you're on a call, working from home or taking a moment for yourself. SPECIFICATION: Advanced Sound Features:Adaptive Active Noise Cancellation Transparency mode; Driver Type & Size:Electro-dynamic driver w/ Neodymium magnets, 40 mm diameter; Frequency Range:20-22,000 Hz; Customizable Sound EQ:Presets available and fully customisable through the Bang & Olufsen App; Earsense:Yes. Designer:MNML; Fit:Over-Ear; Materials:Aluminium Leather Fabric Polymer Rubber; Dust and Waterproof Rating:IP53; Dimensions (Width x Height x Depth) (mm):Headphones: 195 W x 200 H x 52 D Carrying case: 200 W x 180 H x 63 D; Weight (g):Headphones: 285 g Carrying case: 360 g. Battery Playtime:Up to 35 hours with active Bluetooth and Active Noise Cancellation Up to 40 hours with Bluetooth; Charging Time:Approximately 2 hours. Bluetooth Version:Bluetooth 5.1; Bluetooth Codecs:aptX™ Adaptive AAC SBC; Voice Assistant Integration:Yes (dedicated button on device); Microphones:Total: 6 4 x MEMS microphones for voice (2 microphones shared with ANC) 4 x Dedicated MEMS microphones for ANC function; Physical Connections:1 x USB-C 1 x 3.5mm jack; On-Device Controls:Yes; Customizable controls:No; Multipoint:Up To 2 Devices; Certifications / Fast Pairing:Made for iPhone (MFi) Google Fast Pair Microsoft Swift Pair.