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Benq TK705STi Projector

£1,352.81inc. VAT
£1,127.34 ex. VAT
In stock, dispatched within 2 working days
1

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Bought in the UK, backed in the UKWhy it matters →
  • In UK stock, ships from the UK
  • UK manufacturer warranty
  • UK-based engineers
  • No import duty or customs charges
  • GBP pricing, UK VAT invoices
Return within 14 days
3 Year Warranty
Installation services available
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Key specifications
Resolution3840x2160 (4K UHD)
Brightness3000 ANSI lumens
Contrast Ratio600,000:1
Projection TechnologyDLP
Light Source4LED
Light Source LifeUp to 30,000 hrs (Eco)
Throw Ratio0.8 (fixed)
Zoom RatioFixed
All 20 specifications
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Description

The BenQ TK705STi is the short-throw sibling of the TK705i, built for living rooms where the projector needs to sit close to the screen. It projects a crisp, cinema-quality image from 100 to 150 inches from as little as 5.8 to 8.7 feet away, powered by the same maintenance-free 4LED light source rated up to 30,000 hours in Eco mode.

Also in this range:TK710STi Full specifications Compare alternatives

A 600,000:1 contrast ratio and 98% Rec.709 colour coverage via BenQ CinematicColor and HDR-Pro deliver cinematic image quality, while an 8-Way Smart Image Adaptation system automatically sharpens, centres and aligns the picture and adjusts tone based on wall colour and ambient light. Built-in Google TV brings Netflix, YouTube and Prime Video without extra hardware.

Ultra-low input lag of 5ms at 4K/60Hz with ALLM support makes it a strong choice for console gaming as well as movie nights, backed by HDMI 2.1 connectivity, eARC audio return and dual 8W speakers.

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Key features

Short Throw, Up to 150-inch

Projects 100 to 150 inches from just 5.8 to 8.7 feet away.

8-Way Smart Image Adaptation

Auto sharpens, centres, aligns and adjusts tone based on wall colour and ambient light.

5ms Input Lag with ALLM

Ultra-low input lag at 4K/60Hz for responsive console gaming.

Built-in Google TV

Direct access to Netflix, YouTube, Prime Video and more out of the box.

Technical specifications

Resolution3840x2160 (4K UHD)
Brightness3000 ANSI lumens
Contrast Ratio600,000:1
Projection TechnologyDLP
Light Source4LED
Light Source LifeUp to 30,000 hrs (Eco)
Throw Ratio0.8 (fixed)
Zoom RatioFixed
Rec. 709 Coverage98%
Keystone CorrectionAuto 2D ±30°/±20°
Input Lag5 ms (4K 60Hz, ALLM)
Smart PlatformGoogle TV (Android 11)
HDMI Inputs2 x HDMI 2.1
Speaker2 x 8W
Max Image Size150 inch from 8.7ft
HDR SupportHDR10, HDR10+, HLG
Power Consumption250W W
Noise Level26/24 dBA (Typ./Eco.)
Weight3.8 kg
Dimensions229.2 x 168.2 x 249.7 mm
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Throw distance guide

With its 0.8:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:9 image sizes. Try our throw distance calculator for your exact room.

Try a size
100"
16:9 diagonal image
Image
2.21 m × 1.25 m
Lens position
1.8 m
Side view: drag the projector to try its available lens positions
SCREEN1.25 m high1.8 mlens to screen
Position fits
Image sizeImage dimensionsLens distance
60"1.33 m × 0.75 m1.1 m
80"1.77 m × 1.00 m1.4 m
100"2.21 m × 1.25 m1.8 m
120"2.66 m × 1.49 m2.1 m
150"3.32 m × 1.87 m2.7 m

Planning from a real wall? Use the projector room planner to upload a photo, preview the image to scale and find projectors that fit within your maximum available space.

Distances are lens-to-screen, calculated from the manufacturer's stated throw ratio; allow for lens shift and mounting hardware. Always confirm against the manufacturer's installation guide before fixing mounts.

See it on your wall, to scale

Choose a picture size, then upload a wall photo, or scan the QR code and take it on your phone. We'll show the projected picture at its real size.

Picture size
100" 16:9 · 2.21 m × 1.25 m
On a computer, the QR code sends your phone photo straight back to this page.

Complete your setup

Optional extras that fit this product. Tick anything you need and it joins the same basket — or add this product on its own from the buy box above.

Choose a Mount

Choose a Screen

Video Conferencing

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Professional Installation

Want it installed by our AV experts? We offer professional on-site installation including mounting, cable management, and system configuration.

Your Configuration
Benq TK705STi Projector × 1£1,352.81
Total£1,352.81
inc. VAT
1

Frequently asked questions

How far from the screen does the TK705STi sit, and how big can the image get?

With its fixed 0.8 throw ratio, the TK705STi projects a 100 to 150-inch image from just 5.8 to 8.7 feet away, making it a genuine short-throw living room projector.

How bright is the TK705STi and is it good for gaming?

It delivers 3,000 ANSI lumens and, at 4K/60Hz with ALLM support, an ultra-low 5ms input lag, making it a strong choice for both movie nights and console gaming.

Does the TK705STi have built-in streaming apps?

Yes, it has built-in Google TV, giving direct access to Netflix, YouTube, Prime Video and more without extra hardware.

How long does the TK705STi's light source last?

Its maintenance-free 4LED light source is rated up to 30,000 hours in Eco mode, so there are no lamps to replace.

What warranty comes with the TK705STi?

It's covered by a 3-year (36-month) warranty.

How quickly can TopAV deliver the TK705STi?

It's in stock at TopAV, so dispatch is within 2 working days, with free standard UK delivery on this order value.

Delivery & returns

Estimated delivery 5 Sept - 9 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.

Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.

Full delivery & returns policy

Bought in the UK, backed in the UK

  • This item is in UK stock and ships to you from within the UK, so the order never crosses a customs border on its way to you.

  • The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.

  • Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.

  • Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.

  • Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.

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Payment & security

Pay securely by card. Education customers can apply for a 30-day purchase order account.

Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice, with no card payment required. Purchase orders and credit terms are for education customers only.

All transactions are processed over an encrypted, secure checkout.

Purchase order & invoice terms

Alternative products

Closest matches in this category on price and capability. Not sure which way to go? Our technical team will talk it through.

Need help specifying this for your space?

Ask Andrew. He knows the full catalogue and can advise on installation, mounting and compatible AV systems.

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