General Information
The 900MHz RS 85 Wireless RF Headphones from Sennheiser cut the ties that bind you to your audio system or computer, replacing them with awesome high fidelity sound and exhilarating freedom of movement Maximum SPL - 101dB Operating Time Per Battery Charge - roughly 4 hours Built-in audio filter for eliminating TV interference Transmitter stores & recharges headphones 2nd rechargeable battery is included Warranty - 2 years Weight (including battery) - about 5.6 ounces
