Feature: 1. Built-in HD microphone, allowing you to chat with friends or enter words by voice. Note that the voice search function cannot be used across applications. Only applicable to built-in voice input search box or application. 2. Support sensing the direction and speed changes, so you can just move your hand to control. 3. 2.4GHz wireless connection with a USB receiver, plug and play, with remote controlling range up to 4m/13.2ft. 4. Adopt high quality material and exquisite workmanship, stable performance, reliable to use. 5. Comfortable hand feeling, convenient to use, allowing you to control your device more easily. Specification: Item Type: Remote Controller Condition: 100% brand newColor: BlackMaterial: ABSUSB ReceiverTransmission Rate: 250KbpsOperating Frequency: 2400.0MHz-2483.5MHzOutput Power: -18dbm-0dbmFunction: HID compatible device USB audio microphone deviceControllerTransmission Rate: 250KbpsOperating Frequency: 2400.0MHz-2483.5MHzOutput Power: -18dbm-0dbmFunction: 2.4G voice remote controlBattery Type: 2 x AAA batteries (NOT included)Battery Capacity: 300mAhSupported Systems: For Linux/Android 2.X/Android 4.X/Win 2000/Win Vista/Win7 32/Win7 64/Win8 32/Win8 64/MAC OS X. Package List: 1 x Remote Controller1 x Bluetooth Receiver1 x User Manual