Sennheiser RR 2000 B-Stock

B-Stock, Sennheiser RR 2000 In-Ear wirelesss headphone - attention! no transmitter included! just for extension of RS2000! rechargeable wireless headphone, up to 50 m range, 125 dB SPL, up to 9 h running time, frequency response: 15 -16000 Hz, headphone with with built-in Li-Pol rechargeable battery, B-Stock with full warranty, may have slight traces of use