With the MM 550 you can switch between calls and music -- delivered in superb stereo sound as only Sennheiser knows how-- without wires! Luxurious, around-the-ear cups powered by NoiseGard 2.0 eliminates up to 90% of background noise for an incredibly relaxing flight. A convenient TalkThrough function lets you carry a conversation with a seatmate (or teammate) at the push of a button. Selectable SRS surround simulation adds excitement and depth to your audio on-demand. The invisible microphone ensures that you have the added convenience of taking a call without wires, or hassles-- without changing headsets. Using a closed, around-the-ear design to block ambient noise, the MM 550 is an ideal companion for the frequent flier or baller. Advanced DuoFol transducers provide the kind of detail... Less

The Preference of the Professional, Sennheiser In Ear Wireless Monitoring for Two! Now you and another bandmate can come together and get the wireless monitor system that is most trusted by the pros. Sennheiser EW300 Wireless In Ear Monitoring systems allow you to hear your performance better than other wireless systems by using an adaptive- diversity receiver pack that uses the headphone cable as a secondary antenna.  This package offers a transmitter paired with two receivers and earbuds so yourself and another player can share a monitor mix freeing up cable runs and lowering the overall stage volume.  Features Sturdy metal housing (transmitter and receivers) 42 MHz bandwidth with 1680 tunable UHF frequencies Enhanced frequency bank system with up to 16 compatible frequencies Adaptive... Less

Bluetooth technology wirelessly transmits audio and phone calls from your compatible music player or cell phone to the headphones,SRS WOW HD(tm) sound enhancement for improved stereo imaging and bass,around-the-ea r design for outstanding comfort

The Preference of the Professional, Sennheiser In Ear Wireless Monitoring for Two! Now you and another bandmate can come together and get the wireless monitor system that is most trusted by the pros. Sennheiser EW300 Wireless In Ear Monitoring systems allow you to hear your performance better than other wireless systems by using an adaptive- diversity receiver pack that uses the headphone cable as a secondary antenna.  This package offers a transmitter paired with two receivers and earbuds so yourself and another player can share a monitor mix freeing up cable runs and lowering the overall stage volume.  Features Sturdy metal housing (transmitter and receivers) 42 MHz bandwidth with 1680 tunable UHF frequencies Enhanced frequency bank system with up to 16 compatible frequencies Adaptive... Less

Sennheiser sound quality without wires: what could be better? The RS 110 wireless headphone system delivers great sound and lets you enjoy it throughout your house. Powered by two AAA batteries the long operating time lets you wear them without worry. The RF wireless signal delivers a range of up to 328 feet so you can enjoy listening anywhere. The audio cable has a 1/8' plug with a 1/ 4' locking adapter for near universal connectivity. Type: WirelessWireless Type: RFPower Supply: Transmitter: 9V DC Receiver: 2 AAA batteriesOperatin g Time: Approx. 20-25 hrsDistance: Up to 328 ft. (100 m.)Frequency Response: 22Hz-19.5KHzTHD: <0.7%Signal to Noise Ratio(SNR): > 65 dBA

With the SK 300 G3, Sennheiser sets out to make the wireless bodypack better than ever before. The SK 300 G3's provides rock-solid transmission using its enhanced AF frequency range. A pilot tone squelch eliminates RF interference when you turn the transmitter off. This compact bodypack transmitter is ready for use right out of the box, as it receives settings from the receiver through its enhanced "wireless sync" function. There's practically no set up time! When you need quality performance in a small package, choose the Sennheiser SK 300 G3!Sennheiser SK 300 G3 Bodypack Transmitter Features:A Band: 518-554MHzSturdy metal housing42 MHz bandwidth: 1680 tunable UHF frequencies for interference- free receptionEnhanced frequency bank system with up to 24 compatible frequenciesPilot tone... Less

The Sennheiser Freeport Lapel Wireless Microphone System proves that high-quality wireless microphone systems do not have to be expensive. Freeport systems allow four switchable frequencies to be operated simultaneously. Freeport's Diversity receiver features sturdy metal housing, ensuring optimum reception. A dynamics processor provides the Freeport systems with a wonderfully clear and natural sound. All systems are fitted with XLR and 1/4-inch outputs and feature an adjustable squelch to protect against interference. Sennheiser Freeport Wireless System Features Easy-to-use: Plug and play Four Switchable Frequencies: Reliable transmission Four Systems for Simultaneous Use: Suitable for groups Robust Housings: Increased durability Dynamic Processor: Bright,... Less

Entertain yourself without troubling others with the Sennheiser Set 830-TV infra-red stereo listening system, designed for televisions. The ideally fitting earpads of these Sennheiser TV wireless headphones easily fit in your ears and provide you with superior comfort, ideal for long listening hours. The infra-red transmission of this Sennheiser headphone allows you to enjoy your preferred TV program wirelessly up to 12 m. The Sennheiser Set 830-TV headphones have a volume and balance controls on the receiver it to adjust the sound accordingly. Keep yourself entertained for 12 hours continuously with the Lithium polymer battery technology of these Sennheiser TV wireless headphones. The 50 - 16000 Hz frequency response of this Sennheiser headphone gives you clean and well-balanced sound.

This kit consists of: Sennheiser EW172 Wireless Guitar System: The EW172 has some unique features, it has a cable emulator feature that allows you to adjust virtual cable lengths to get sound response just like a cable. Another great new feature for guitarists is the built-in guitar tuner, right on the display. A built in 5 band EQ allows you to fine tune your sound even further. Bass players in particular will be pleased with the enhanced AF frequency response: it starts at a thundering 25 Hz, which will especially please players with 5 string bass guitars. - Plug in and play! Guitar SideKick: The Guitar Sidekick is a neck-mounted clamp system designed to hold a SmartPhone, MediaPlayer, recorder, or tuner. The system enables you to easily use any of the music/guitar apps available for... Less

Never used, only opened for pictures. Sennheiser RS 100 wireless 900 MHz headphones. Shipping is $12.50 in the lower 48 states Posted with eBay for iPad