Features and Functions: 2.4 GHz Frequency BandLow-Latency TransmissionSonic Presets & Noise SuppressionClosed Circumaural Headphones Description: Giving you clear signal transmission with low latency, the RS 195 Digital Wireless Headphone System from Sennheiser is comprised of a pair of HDR 195 headphones and a TR 195 transmitter that also serves as a docking and charging station for the headphones. Hearing boost presets help you boost dialog clarity and suppress noise from your source audio. The system provides up to a 328' range of operation and features both analog and digital inputs for compatibility with a variety of home entertainment systems. A pair of rechargeable batteries, analog and optical cables, and a power supply are included.Items Included: Sennheiser RS 195 Digital Wireless Headphone System HDR 195 Headphones TR 195 Transmitter Digital Optical Cable Analog Audio Cable Power Supply 4 x Adapters (EU, UK, US & AU) 2 x AAA NiMH Rechargeable Batteries