Transmission method: 2.4G RF wireless Number of keys: 18 Range: more than 10m Battery Type: 2 x AAA Battery (no included) Size: 160x43x1.5MM colour: as shown Material: ABS Package Contents: 1 x remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.