Sennheiser ACCENTUM Over-Ear Wireless Headphones - BlackWhen you need all day comfort and top notch sound, look to the black ACCENTUM Wireless Headphones from Sennheiser, which feature plush silicone earcups, custom TrueResponse transducers, and an incredibly long 50 hour operation on a single charge, letting you enjoy your music for the longest listening sessions without strain. The combination of the over ear design with the built in Adaptive Hybrid Active Noise Canceling (ANC) ensures a noise free