... to help when using in poor lighting environments. * Wireless 2.4GHz radio frequency Product featuresThis is a handheld keyboard ... lights to help when using in poor lighting environments.* Wireless 2.4GHz radio frequency with USB receiverErgonomically design makes ... longer usage time, endurable for up to 1 month.* One Wireless Laser Pointer, e-PointerKeyboard, mouse, presenter trinity, three- ...