Two-way speaker for outdoors with power rating of 20 W, selectable by switch to 20, 10, 5 and 2.5 W, 100 V / 8 ohm. 4" woofer for low and medium frequencies and 1" tweeter for high frequencies. Frequency response of 90-20.000 Hz. Sensitivity 88 dB (1 W, 1 m and 1 kHz). Maximum sound pressure level 101 dB (20 W, 1 m and 1 kHz). Dimensions 158 x 238 x 129 mm. Weight 2.38 kg. HIPS black enclosure, metallic grille and adjustable bracket. Weatherproof with IP55 rating. OPTIMUS model ref. WCM-20WT (white) or WCM-20BT (black).