The Sennheiser SET 840S is a wireless RF audio system designed for clear and convenient TV listening. It connects easily to televisions, hi-fi systems, or radios, delivering sound directly to the included receiver or compatible headphones. Using wireless RF transmission, the system offers reliable audio with a range of up to 100 meters, even through walls. The lightweight receiver features simple controls, including an easy-to-use volume dial and adjustable balance for personalized sound settings. The system includes a charging dock for convenient storage and recharging, along with multiple selectable channels to ensure stable reception. Key Features: Wireless RF transmission with up to 100 m range Clear stereo sound with adjustable audio settings Easy connection to TV, radio, or hi-fi systems Lightweight receiver with volume and balance control Includes headset and charging dock Multiple transmission channels for stable performance Specifications: Frequency channels: 3 selectable options Battery: Lithium-polymer (up to 9 hours use) Charging: Integrated dock station Connectivity: 3.5 mm stereo jack In the Box: Sennheiser SET 840S transmitter and receiver Headset Charging dock Power supply and connection cables