Skip to content
BenQ TK700ST Smart Projector

BenQ TK700ST Smart Projector

By BenQ · Smart Projectors · Audio & Electronics · More from BenQ

  • 3000 ANSI lumens
  • 3840x2160 native resolution (4K UHD), DLP, 30-bit color
  • Throw ratio 0.9:1-1.08:1, 100-inch image from 6.5 ft
  • Contrast ratio 10,000:1 (FOFO), 96% Rec.709 coverage
  • Input lag 4.2 ms @1080p/240Hz, 8.3 ms @1080p/120Hz, 16.7 ms @4K/60Hz

Price not listed

New
Used, refurbished, open-box

Stores are listed in a fixed order, never by price or commission. Prices are snapshots. Check the current price with the store.

Problems, parts and running costs

Summary

The BenQ TK700ST is a lamp-based 4K short-throw projector for small rooms and console gaming, with 3000 ANSI lumens and input lag down to 4.2 ms at 1080p/240 Hz. Check your room before you buy: there is no lens shift, 4K runs at 60 Hz only, and no streaming system is built in.

Strengths

  • Short throw: a 100-inch image lands about 6.5 ft from the lens.
  • Input lag of 4.2 ms at 1080p/240 Hz and 8.3 ms at 1080p/120 Hz.
  • 3000 ANSI lumens with 96% Rec.709 coverage and a 10,000:1 FOFO contrast figure.
  • 3-year parts-and-labor warranty from BenQ America.
  • HDMI audio return with Dolby Atmos pass-through, so a soundbar or AVR can take over.

Weaknesses

  • 4K is limited to 60 Hz; the 240 Hz mode only runs at 1080p.
  • No lens shift: placement depends on zoom, keystone and picture rotation.
  • Lamp-based light source at 4000 h in Normal mode, so a replacement lamp is part of ownership.
  • A 5 W speaker is the only built-in audio, and no streaming platform is included.
  • Lamp coverage is not spelled out: the warranty page defers to lamp terms it does not publish, and no lamp price is published either.
  • No independent lab test of this exact model has been published, so brightness and contrast figures are the maker’s own.

Verified specifications

Projectionsingle-chip DLP with XPR pixel shifting to 4K UHD (3840 × 2160), native 16:9.
Brightness3000 ANSI lumens.
Contrast10,000:1 FOFO (full on/off).
Color coverage96% Rec.709.
Display color30-bit (1.07 billion colors) per BenQ; ProjectorCentral lists 10-bit color processing.
Light sourcemetal halide lamp.
Lamp life4000 h in Normal mode, 8000 h in SmartEco, 10000 h in ECO, 15000 h in LampSave.
Throw ratio0.9–1.08, about 6.5 ft for a 100-inch image.
Zoom1.2x manual.
LensF/# 1.94–2.05, f 9.25–11.1 mm, no lens shift.
Keystone2D, automatic vertical ±30°, horizontal ±30°.
Input lag16.7 ms at 1080p/60 Hz and 4K/60 Hz, 8.3 ms at 1080p/120 Hz, 4.2 ms at 1080p/240 Hz.
Scan rateshorizontal 15–135 kHz, vertical 23–120 Hz.
Input supportVGA (640 × 480) to 4K UHD.
Ports2 × HDMI (2.0b), USB Type-A (2.0, 1.5 A power), RS232 DB-9, 3.5 mm audio out.
AudioHDMI audio return (eARC) with Dolby Atmos pass-through, plus a 5 W internal speaker.
Picture modes3D, Bright, Cinema, Game, HDR, HDR Game, HLG, Living Room, Sport, User.
Noise34 dBA typical, 28 dBA in eco mode.
Power305 W typical draw at 110 V, under 0.5 W on standby, AC 100–240 V supply.
Temperature range0–40 °C.
Dimensions12.2 × 4.3 × 9.6 in (312 × 110 × 246 mm).
Weight6.83 lb (3.1 kg).
In the boxremote control (RCV013) with battery, 1.8 m power cord, quick start guide, warranty card.
Warranty3 years parts and labor from BenQ America.
Full research notes and sources

Short throw and placement

The TK700ST throws a 100-inch image from about 6.5 ft, which is what the short-throw lens buys you: the projector can sit close to the screen instead of at the back of the room. The throw ratio is 0.9–1.08 and the zoom is 1.2x manual, so there is some slack around that figure.

There is no lens shift. If the lens does not sit level with the middle of the screen, the correction comes from 2D keystone (automatic vertical ±30°, horizontal ±30°) and picture rotation. The chassis is 12.2 × 4.3 × 9.6 in (312 × 110 × 246 mm) and weighs 6.83 lb (3.1 kg), and BenQ lists a universal ceiling mount, the CM00G3, as an optional accessory.

Draw is 305 W at 110 V and the supported temperature range is 0–40 °C, with published noise of 34 dBA typical and 28 dBA in eco mode.

Input lag and refresh rate

BenQ publishes 4.2 ms at 1080p/240 Hz, 8.3 ms at 1080p/120 Hz, and 16.7 ms at both 1080p/60 Hz and 4K/60 Hz. The vertical scan range is 23–120 Hz, so the 240 Hz mode needs a PC display; consoles typically top out at 120 Hz, which makes 240 Hz a PC-only number here. 4K itself is capped at 60 Hz, and there is no high-refresh 4K mode to switch into. The picture modes cover Game, HDR Game, Cinema, Sport, Living Room, HLG and 3D.

The nearest measured numbers come from the closely related TK700STi, which shares the same imaging engine: it managed 17 ms at 4K/60 Hz against BenQ’s claimed 16.7 ms, and 9 ms at 1080p/120 Hz against 8.3 ms claimed. The 1080p/240 Hz figure was never measured. Nobody has published an instrumented test of the TK700ST itself, so read the BenQ numbers as typical rather than guaranteed and leave yourself a frame or two of margin in a competitive shooter.

Lamp life, warranty and running costs

The light source is a metal halide lamp, and its life depends on the mode you leave it in: 4000 h in Normal, 8000 h in SmartEco, 10000 h in ECO and 15000 h in LampSave. Nothing published for this model gives a replacement lamp part number or a lamp price, so that cost is the one figure you cannot plan around today. Electricity is easier to estimate: 305 W of typical draw at 110 V and under 0.5 W on standby.

Warranty is 3 years of parts and labor from BenQ America with no advance replacement. A dead-on-arrival unit has to be reported within 30 days, shipping damage within 7 business days, and the RMA number is good for 30 days. Service is depot-based: you ship the projector to BenQ and pay the freight there, while BenQ covers the return leg during the warranty period. The terms exclude normal wear and tear, misuse, modification, an unsuitable environment and damage from non-BenQ parts. The same page says the warranty applies “except for lamps as specified below”, but it publishes no lamp term, so treat lamp coverage as unsettled.

Is it worth it?

ProjectorCentral lists $1,799 for the TK700ST (2026-10) and shows the model as shipping since its January 2025 release. The closest alternatives on the same page sit right next to it: the LED TK705i at $1,699 and the laser TK710 at $1,966. Both of those take the lamp out of your ownership plan; the TK700ST adds the lamp and buys you the short-throw lens and the gaming latency.

The value bands are simple. At or below about $1,500 it is a strong buy for a bright 4K short-throw gaming projector with a 3-year warranty. Between $1,501 and $1,800 it is fair, and the TK705i and TK710 are worth comparing on total cost of ownership. Above $1,800 it is weak unless you specifically need short-throw placement.

What you do not get at any of those numbers is an independent verdict on the picture. BenQ’s own figures are the only brightness, contrast and latency numbers published for this model, so a bargain sticker still buys a spec sheet rather than a lab result.

Which model this is

This page covers the BenQ TK700ST: a lamp-based, 4K UHD, short-throw projector with no smart platform inside. Some retailer copy calls it a smart projector, but that label belongs to the TK700STi, which bundles a QS01 Android TV dongle; the TK700ST needs a streaming stick, a game console or a laptop on HDMI. Keep it apart from the TK700 (standard throw, 3200 lumens), the TK710 and TK710STi (laser, 3200 lumens) and the TK705STi (LED). The Amazon listing for this model is ASIN B0DNV426RC.

Sources

Manufacturer:

Independent:

Owner reports:

  • No exact-model owner threads were located on Reddit or in the projector’s forums.

Buying guides for this category

Compare with

Related products