Product OverviewSennheiser ACCENTUM Wireless over-ear headphones combine long battery life with signature sound and hybrid active noise cancellation. The design focuses on keeping everyday listening enjoyable across work, travel and time at home.Transparency Mode brings surrounding sound back when needed, while a five-band equaliser and dedicated sound modes let you adjust the presentation. A lightweight ergonomic frame supports the longer sessions made possible by its substantial battery endurance.Key Features and Benefits Up to 50 hours playback: Listen for extended periods between charges under the stated Bluetooth and ANC test conditions. Hybrid ANC: Reduce background distractions to focus more closely on audio. Transparency Mode: Hear external sounds without taking off the headphones. Five-band equaliser: Adjust different frequency regions to suit your preferences. Bass Boost and Podcast modes: Select a presentation for stronger bass or speech-focused content. Lightweight ergonomic design: A 222 g body supports comfortable extended wearing. Quick charging: Ten minutes of charging provides up to five stated hours of music. Technical SpecificationsThe dynamic 37 mm transducers have a specified 10 Hz–22 kHz response and sensitivity of 106 dB SPL at 1 kHz and 0 dB FS. Distortion is below 0.3% at 1 kHz and 100 dB SPL. Two MEMS microphones use beamforming for noise-reduced voice pickup.The built-in 800 mAh lithium-ion battery takes approximately three hours to charge fully through USB-C. The up-to-50-hour figure was tested over Bluetooth with ANC, using an iPhone at medium volume; actual endurance depends on use. Listed charging input is 5 V at up to 700 mA.Ideal Use CasesACCENTUM Wireless suits listeners seeking comfortable noise-cancelling headphones with fewer charging interruptions. Sound modes are useful for a routine that alternates between playlists, podcasts and calls.Compatibility and ConnectivityBluetooth 5.2 supports media and call profiles including A2DP, AVRCP, HFP and HSP. Listed media codecs are SBC, AAC, aptX and aptX HD, depending on source support. Sennheiser Smart Control for iOS and Android provides customisation. The included USB-C cable is specified for charging.