Sennheiser Premium Lightweight Wireless Noise Reduction Hi-Fi Stereo Headphones The Sennheiser Premium Surround Sound Lightweight Wireless Headphone System is designed to transmit analog audio sources wirelessly to its headphones with a range of operation of up to 330-feet. The headphones feature a built-in rechargeable battery that can provide playback for up to 25-hours per charge. They are charged by connecting to the transmitter base station, and produce a full charge in 3.5 hours. The headphones also feature Surround Sound and an adjustable headband designed to provide comfort for long listening sessions.Wireless HeadphonesThe Sennheiser wireless headphone system transmits an uncompressed 2.4 GHz radio frequency signal to reduce unwanted interference while the real-time automatic channel tuning prevents signal degradationExtended comfortAdjustable soft padded headband and Over-Ear earpads designed to provide maximum comfort. Listen to music for hours and forget you even wear themSurround SoundBring home wireless to the next level with the headphones that delivers an epic 7.1 surround sound experienceWireless TechnologySennheiser's Digital Headphones use radio frequency signals and have an expanded reception range (up to 330ft) that does not require keeping the headphones within line of sight of the transmitter. Perfect for use with your TV, Computer or Hi-Fi radioLong battery lifeThe headphones feature a built-in rechargeable battery that can provide playback for up to 18-hours per chargeFast chargingA 3.5 hour charge will produce a full charge of approximately 18 hours
