A viewfinder is the window in the camera through which a photographer views the picture. Used for choosing, composing, and often focusing the image. There are two types: optical and digital. In an optical viewfinder, the photographer looks through a transparent window to frame and focus the image. The photographer is seeing the real image, through the window of the viewfinder. With a digital viewfinde, there is an LCD display built into a camera that gives a digital view of where the camera is pointing. It's used to compose and focus the image.

The degree to which something is or can be magnified (made to appear larger than it is).

Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the interface used for connection, communication and power supply between computers and electronic devices. Every new version - for example 1.1, 2.0, 3.0 - is much faster than the previous one.

What type of USB connector is built into the device.

HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.

The socket where a microphone is connected to the device.

How headphones connect to a device e.g. wirelessly or via a cable and connector.

Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.

The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).

Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.

The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.

Technique in photography and image processing, which involves a global adjustment of the intensities of the colors (typically red, green, and blue primary colors). An important goal of this adjustment is to render specific colors – particularly neutral colors including white – correctly.

Scenery mode', 'Portrait mode' and other modes which are manually/automatically activated on a camera and change the settings (e.g. exposure time) accordingly.

Duration of self-timer, that's a camera device that gives a delay between pressing the shutter release and the shutter's firing. It is most commonly used to let photographers to take a photo of themselves (often with the family), hence the name.

With direct printing it is possible to print your photographs or other documents directly to a printer from a compatible device, without the use of a computer.

Global Positioning System (GPS) is a space-based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. The system provides critical capabilities to military, civil and commercial users around the world. It is maintained by the United States government and is freely accessible to anyone with a GPS receiver.

The device e.g. smartphone, tablet uses gravity to sense whether it should be displaying in portrait or landscape mode.

The product can be used to remotely manage a smartphone.

The colour e.g. red, blue, green, black, white.

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

Description of battery supplied with the product, such battery form factor (e.g. AA/AAA).

The number of batteries that can be used with the product.

The minimum and maximum temperatures at which the product can be safely operated.

The measurement or extent of something from side to side.

The distance from the front to the back of something.

The measurement of the product from head to foot or from base to top.

Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.

The total weight of the device with its battery, given in kilogram (kg).

The distance from one side of the packaging to the other.

The distance from the front to the back of the packaging.

The distance from the top to the bottom of the packaging.

Weight of the packaged product.