Philips SHD8850 wireless headphones immerse you in your own world of cinematic sound, with total freedom. Digital wireless connectivity provides interference-free, crystal clear sound, for the ultimate in personal home entertainment. Superior listening experience - Superior cinematic sound from 40mm drivers - High-res audio via wired connection Ease of use - 20-hour runtime for long listening sessions - Move freely with 30m wireless range - Automatic on/off power - Easy-to-use charging dock - Optical and analog input fits all televisions Designed for long-wearing comfort - Hammock auto-adjusts for optimal fit - Breathable velour ear cushions for extensive comfort.