Small Keypad Wireless 2.4G Bluetooth Wired USB 3 Modes Programmable RGB Blue Switch 4 Key Macro Mechanical Keypad for Phone Computer Tablet Item Type: Small Keypad Material: ABS Connection: Wireless 2.4G, Bluetooth, Wired USB Three Modes Switch Type: Blue Switch Mechanical Keyboard Lighting Effect: RGB Battery Type: Built in 230mAh Li Ion Battery Compatible Devices: Universal for Computers Keyboard And Mouse Functions: For Keyboard Or Mouse Any Single Key, Combination Keys, Mouse Cursor, Scrolling Actions String Function: Continuous Output Of Letters Or Symbols, Up To 38 Characters Multimedia Functions: Common Multimedia Functions Such As Volume Up, Down, Play, Pause, My Computer, Etc. Macro Definition Function: This Function Can Set Keyboard And Mouse Combination Actions, And The Actions Can Add Delay. Can Use Recording Function To Record Keyboard, Mouse Actions Multifunction S Key Description: Single Click To Switch Key Value Layers, With A Total Of Three Key Value Layers. Each Layer Can Be Customized With Different Functions, Allowing Three Keys To Have The Functionality Of Nine Keys (Red Indicator Light For The First Layer, Green Light For The Second Layer, Blue Light For The Third Layer)