The Sennheiser HDR 120 RF wireless headphones are an inexpensive supplementary or expansion set, operating in the 863MHz or 926MHz variant frequency range, and designed for use with Sennheiser's RS 120 Hi-Fi or television wireless headphone monitoring system. These headphones feature extended low frequency reproduction, a supra-aural, open-back design, and NiMH rechargeable battery operation with a 20 - 25 hr. battery life.
Note: The Sennheiser RS 120 Wireless Headphone Monitoring System is required to use this product.
HDR 120 - Wireless RF Expansion Headphones for RS 120 Cordless Headphone System
HDR 120 Wireless Headphones
NiMH Rechargeable "AAA" Batteries
2 Year Warranty