... Cancelling Direct with RJ11 plug Earphones Direct with RJ11 plug Headset Key Features:1. Acoustic shock ... 3903, 3904, 3905 Meridian Option M3110, 3310, 3820 BT Converse 220, 225, 300, 320, 325, 420, 425, 1100, 1200, 1300, 1400 ... 4 (2-line) Uniden: 420 and 450Telephone headset FOR600 photo: Earphones Direct with RJ11 plug