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TH671ST
BudgetProjector

BenQ

TH671ST

$849

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Prices confirmed Nov 10, 2026 · we check every retailer daily

On Amazon, check the “Sold by” line: Amazon.com, the brand’s own store, or an authorized dealer. Some makers, Garmin and BenQ among them, can refuse warranty claims on units bought from other sellers.

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TH671ST
Buy at Amazon · $849, TH671STCompare 2 retailers

A 1080p short throw with a lamp, not a laser or LED: 3,000 ANSI lumens, a 1.2x zoom (0.69–0.83 throw, a 100-inch image about 5.0 to 6.0 ft from the screen, per BenQ's manual) and a 102.5% offset. BenQ rates the 240 W lamp at 4,000 hours in normal mode and up to 15,000 in its LampSave mode, and replacement lamps are a recurring cost. BenQ's own Amazon store sells it for $849, and Indoor Golf Outlet for $949, which makes it the least expensive 1080p projector we list. Over a few years of regular use the lamp narrows the gap to LED and laser models such as Optoma's LH352BST.

Who this is for

Honest match per persona.

Good for

No specific match.

Not for

  • Performance Seeker

    1080p, 3,000 lumens and a lamp that dims with age. Serious practice wants a laser and more resolution.

  • Showroom

    A lamp projector at entry-level brightness for a room built to impress.

  • Cost-Effective Buyer

    The lowest price we list for 1080p, but the lamp needs replacing every 4,000 to 15,000 hours depending on mode. The LH352BST's LED is rated 30,000 hours for $999.

  • Family Setup

    A shared room that also runs movies and games puts hours on the lamp fastest. An LED or laser projector avoids the replacements.

  • Recreational Player

    A casual room wants a projector you switch on and forget; a lamp adds replacements to plan for.

Specifications

The numbers, plainly stated.

Image

Resolution1080p (1920×1080)
Lumens3,000 ANSI

Hardware

Light SourceLamp, 240 W (4,000 h normal, 10,000 h eco/SmartEco, 15,000 h LampSave)
Throw Ratio0.69–0.83 (1.2× optical zoom)
Offset102.5%; no lens shift
Dimensions11.65 × 8.82 × 4.72 in (W × D × H)

Requirements

Throw Distance100 in at about 5.0–6.0 ft (BenQ's manual)

Room planner

See the BenQ TH671ST in your sim room.

The planner draws it to scale with your room and your screen: where it mounts, how far the lens sits from the screen, and whether your swing or your shadow crosses the light. It opens in a sample room; put in yours.

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