link 1.0 Djem Guerreru Inc. https://www.djemguerreru.com 21600 JOITO's https://www.joitos.com https://cdn.joitos.com/GENERAL/98/984/9847/9847935.V0.jpg 400 250 https://www.joitos.com/item/25385515/Expansion%2DMics%2Dfor%2D55Wx%2C%2D250%2C%2D300%2DSeries - Konftel expansion microphones for the 250, 300, 300IP, 300Wx, 300M, 55Wx and 55W conference phones- Increase range up to 70 square meters- Connection cables in two lengths, 1.5 and 2.5 meters, included 156.42 USD 11 Electronics & computer--Phone & telecom--Conference