Wireless Communication: RFFrequency: 433 MHzPlease note: The voice function can only be using after the controller needs be successfully paired with the TV.size: 18 x 3.5 x 3cmMaterial: ABScolour: blackPackage Contents:1 x Remote ControlOnly the above package content, other products are not included.Note: Light shooting 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.