Features:* Mini and portable, convenient to use, you can control the devices on your couch.* 2.4GHz wireless transmission, enjoy long-range distance up to 10m.* With USB 2.0 receiver adapter, plug and play, no driver needed.* Suitable for for Smart TV, Android TV Box, Google TV, PC, HTPC and more.* With voice input function, very convenient to use.Note:The OK key has no effect on partial input method.Voice function requires manual selection of products in some chat software so the product voice function is useful.