Optoma WU470 Professional Presentation Projector

The measurement of a display’s diagonal, expressed in inches or centimeters. It indicates the overall visual area available for content and is commonly used to compare monitors, televisions, laptops, tablets, and other electronic devices.

Indicates whether the product has a coating that blocks ultraviolet (UV) rays at 100 % intensity, protecting skin and eyes from harmful exposure.

The main illumination source used by the product, such as LED, laser, CCFL, or other light-emitting technologies. It indicates whether the device uses a single light source or multiple sources and helps users understand the lighting characteristics of the item.

The amount of light emitted by a source, measured in lumens (lm). It indicates the brightness level that can be perceived by the human eye and is commonly used for lamps, bulbs, projectors, and other lighting devices.

The pixel dimensions of a display or image, expressed as width by height (e.g., 1920x1080). It indicates how many pixels are used to render the visual content and is commonly applied to monitors, TVs, projectors, laptops, smartphones, and other devices that output video.

The electrical power output of each built‑in speaker in the product, expressed as a pair of values (e.g., "2 x 10 W" meaning two speakers each rated at 10 W). This attribute helps users compare audio performance and understand the power capacity of integrated speakers.

The chemical composition of a battery that determines its performance, energy density, and suitability for different applications. Common chemistries include Lithium‑Ion, Nickel‑Metal Hydride, Alkaline, Lead‑Acid, and others.