Voice Air Mouse and Voice TV remote,Power Key Can support IR learning. 2.4G transmission up to 15m. Applicable to: Smart TV, IPTV, Networked Set-top Box, Mini PC, Android TV Box, HTPLC, PCTV. USB receiver: Transmission rate: 1Mbps Operating frequency: 2.4GHz - 2.4835GHz Output power: -18dBm - 0dBm Function: HD compatible device, USB audio microphone device Controller: Transmission rate: 1Mbps Operating frequency: 2.4GHz - 2.4835GHz Output power: -18dBm - 0dBm Function: 2.4G voice remote control Material:PC colour:black Package Contents: 1 * Air Mouse Remote Control 1 * USB Receiver Only 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.