Reported light-source lifespans vary by model. Examples in the listings include about 20,000 hours, a listing showing 3.42 years, and up to 50,000 hours. Actual life depends on the specific model and usage settings (brightness mode, hours used, maintenance), so check each product’s spec for its rated hours.
Sizes and weights vary widely across models. Examples in the listings include compact units around 6.39 pounds and larger laser home-theater models in the ~28–31 pound range, with corresponding differences in physical dimensions. Check the individual product spec sheet for exact dimensions and mounting requirements.
In these listings, “native 4K” means the projector uses a true 3840 × 2160 panel, which contains about 8.3 million physical pixels. That is the standard definition used in the product details to indicate true 4K resolution.