Does power: 3 w / 6 w; Does constant pressure input: 70 v to 100 v; Does frequency response: 100 hz to 15 KHZ. Does the sensitivity: 93 + / - 3 dB; Does the ceiling openings: Φ 170 mm; Does decorative cap size: Φ 188 * 76 mm; Does the installation forms: type suction a top; Does adornment material: ABS; Does weight: 0.7 kg; Does the speaker unit specification: 6 "* 1;