'''ireless transmission: This keyboard adopts wireless transmission technology, with strong typing force and stable signal. This wireless transmission is suitable for bluetooth keyboard and smart tv, mobile phone with bluetooth function.''''power supply: This keyboard is a wireless connection, and can be used for bluetooth with your phone, tablet, mobile power supply or laptop.''''rechargeable bluetooth wireless keyboard: Rechargeable bluetooth keyboard, no need to buy batteries. Rechargeable bluetooth keyboard with a builtin rechargeable battery, suitable for using in home or office. Meanwhile, rechargeable bluetooth keyboard for ipad mini.''''multifunctional keyboard: The multifunctional keyboard can be used as a keyboard and mouse, convenient to operate.'''