The DEWALT DXFRSRM1 remote speaker microphone is compatible with DEWALT FRS walkie Talkie two-way radios (Dxfrs300 and Dxfrs800). One-touch operation with push-to-talk (PTT) making it simple to talk, 360 degree swivel clip, Coil Cord, Omni-Directional Acoustics to help pick up sound equally from all directions. Limited Lifetime warranty; Warranty only valid by authorized resellers.