Closed-back headphones – 20 Hz – 20 KHz – With volume control – 100 – Universal wireless headphones for TV with analog and digital audio inputs • Wireless system (863 MHz) allows listening to programs without the clutter of cables and provides complete freedom of movement • The signal passes through walls. Maximum range 100m in open space • Quick connection to TV and other analog and digital audio sources • The headphones feature 3 audio inputs – digital optical (Toslink), digital coaxial, and analog AUX (3.5 mm jack) – making them compatible with virtually all TV models on the market • Compact charging base, ideal for storing the headphones after use • Approximately 8 hours of continuous use with enhanced lithium polymer battery (+70% compared to the previous version) • Lightweight, ergonomic, and comfortable, with oval-shaped ear cups that fit perfectly to the shape of the ear • Excellent acoustic insulation against ambient noise • Two transmission channels available to avoid interference.