Analog cursor for precise positioning. 2.4G wireless connection up to 10 meters. Plug and play, no driver installation required. Specially designed for Android system to enable comprehensive human-computer interaction. Compatible with: Smart TV, Android TV box, mini PC, HTPC. Supported systems: Linux, Android 2.x, Android 4.x, Windows 2000, Windows Vista, Windows 7 (32/64-bit), Windows 8 (32/64-bit). Instructions: Insert the USB receiver into the computer's USB port. Wait for the computer to automatically install the driver. Product Name: Remote Control Material: Plastic + Silicone Color: Black Size: 135 x 37 x 14.7mm / 5.31 x 1.46 x 0.58 inch Power Supply: 2 x AAA batteries (not included) Interface: USB 2.0 Bluetooth Version: No Wireless or Wired: 2.4G Wireless Back-lit: No Operation Distance: 10m Key Force: Soft Quantity: 1 Set (other accessories shown in the picture are not included) Package Contents: 1 x Remote Control (battery not included) 1 x USB Receiver Note: This version does not support voice functionality. Conversion: 1cm = 10mm = 0.39 inch Package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowed: +/- 1-3cm.