A 3dB broadband thruline Bi-Directional attenuator working from DC to 4GHz with +-0.5dB error and 2GHz-4GHz with +-1.3dB error. Continuous power rating is Bi-directional. Total frequency range and vswr: 1:1.25, DC-4GHz. Connectors: “N”(m) input, “N”(f) output. Size: 83mm (L) x 39mm dia. Weight: 170gm.