Mobri unique compact design offers the following advantages: low windage, noiseless, light weight, easy to mount. Can be laid down. Choose the M2 if you sail along the coast. Easy to remove. Radar cross section: 2sqm/21.5 sq.ft. Observable distance: Approx 3 nautic miles. Dimensions: 50 x 585mm/ 2 x 23". Weight: 475g/ 16.8oz.