Standard Specification: 

• RF(2.4G)
• 250mAh
• Up to 19 keys and 38 for Mini Keyboard
• Microphone Interface
• Metal Domes on all keys
• Hard Key Tops on all keys
• Build in Rechargeable Battery
• Air Mouse function
• LED Indication 

Options:

• BLE,BLE Voice
• Voice command
• Backlight for all keys
• Remove of Air Mouse
  function