... Mini keyboard 4.2.4GHz & bluetooth 5.Eboard for Iphone/ 4S or Ipad 1.Technology 2.4G / Bluetooth wireless ... .Product Specifications : 3.1 2.4G / Bluetooth wireless technology transmission, longest distance up to 15 meters.3 ... receiver into your computer USB port, then the keyboard lights flash rapidly, the pairingis successful.5.3 ... PC, tablet, etc. Portable Eboard Smart-handheld Wireless Keyboard