What the product should be used for, and how it should be used (e.g. ambient temperature).

The technology that enables connectivity of the device, e.g. wired or wireless.

The ports (sockets) where the device connects with other devices.

The characteristics of the key switch, mechanical vs rubber dome. A mechanical key switch is usually more expensive, gives a stronger feedback and can be more precise.

The letters which are marked on the keys for convenience of the keyboard usage with specific language.

Keyboard size, e.g. standard, mini.

Small, palm-sized, seventeen key section of a computer keyboard, usually on the very far right. The numeric keypad features digits 0 to 9, addition (+), subtraction (-), multiplication (*) and division (/) symbols, a decimal point (.) and Num Lock and Enter keys. Laptop keyboards often do not have a numpad, but may provide numpad input by holding a modifier key (typically labelled "Fn") and operating keys on the standard keyboard.

A small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose e.g.for a channel on FM radio; for mobile networks to communicate with mobile phones.

Product has a built-in light source for its illuminating.

The style of the keyboard e.g. straight, curved.

La couleur, p. ex. rouge, bleu, vert, noir, blanc.

Type of surface coloration e.g. monotone, image.

What the power source is.

Defines the range of operating voltages available

The type of battery in the device, e.g. nickel–cadmium (NiCd).