Product name: magnet speaker; Power: 1 W Resistance: 16 Ohm; Type: Internal Magnet Base diameter: 16 mm / 0.6 inch; Diameter: 36 mm / 1.4 inch Height: 5 mm / 0.2 inch; Material: Aluminum, Metal, Plastic Weight: 10 g; Color: Silver Package Contents: 1 x internal magnet speaker Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/-1-3cm.