BenQ TK705STi

Name: BenQ TK705STi
Brand: BenQ
SKU: 1863

Manufacturer: BenQ

The BenQ TK705STi is a compact 4K laser projector designed for home use, combining a long-lasting light source with a built-in smart TV platform and wireless casting support. It features Chromecast built-in alongside AirPlay, making it straightforward to stream content from a wide range of devices without additional hardware. A dedicated smartphone app adds another layer of control and convenience to the setup.

Brightness is rated at 3000 ANSI lumens, and the projector supports 10-bit color depth along with HDR10, HDR10+, and HLG for a broad range of compatible content. The laser light source is rated for 20000 hours in standard use and 30000 hours in eco mode, with audible noise sitting at 26 dB (24 dB in eco). It can project images up to 160″ from a minimum throw distance of 0.8 m, includes motorized focus, and delivers a 5 ms response time at 60 Hz. Audio is handled by stereo speakers rated at 2 x 8W, complemented by an S/PDIF output and a 3.5 mm headset jack. Two HDMI ports and two USB ports round out the physical connectivity options.

Pros

The laser light source is rated for 20000 hours in standard use and up to 30000 hours in eco mode, reducing the need for lamp replacements over time
Motorized focus allows precise image adjustment without manual handling of the lens
Supports HDR10, HDR10+, and HLG, covering a broad range of high dynamic range content formats
Chromecast built-in and AirPlay provide flexible wireless streaming options without extra adapters
The built-in stereo speakers output 2 x 8W, offering a self-contained audio setup alongside the S/PDIF port for external audio systems
At 3800 g with dimensions of 230 x 170 x 250 mm, the unit is relatively portable for a 4K laser projector

Cons

Wi-Fi is not supported, which limits direct network connectivity options
No vertical or horizontal lens shift means placement flexibility is restricted and precise physical positioning is required
The 60 Hz refresh rate may not satisfy users who require higher frame rate support
There is no external memory slot, so local media playback via inserted storage is not possible
Voice commands are not supported, removing hands-free control as an option

Who is this for?

This projector is a solid fit for home theater enthusiasts who want 4K HDR content with a large screen — it can project up to 160″ and supports HDR10, HDR10+, and HLG, making it well-suited for movie nights and streaming sessions. The built-in smart TV platform combined with Chromecast and AirPlay support makes it practical for users who want a self-contained setup without relying on external media players. Its laser light source rated up to 30000 hours in eco mode also appeals to those who prioritize long-term reliability and low maintenance, while the compact dimensions and 3800 g weight make it manageable for users who may need to reposition it occasionally.

Who is this NOT for?

Users who need flexible installation options will find this projector limiting, as it offers no lens shift in either direction, requiring very precise physical placement to achieve a correctly aligned image. The 60 Hz refresh rate and lack of Wi-Fi make it a poor match for users interested in fast-paced gaming or those who rely on a wireless network connection for streaming rather than direct casting protocols. Additionally, anyone looking to play back local media from a USB drive or memory card should note the absence of an external memory slot, and those who prefer hands-free control will find no voice command support available.

General info:

lamp life	20000 h
audible noise	26 dB
has laser light source	✓
audible noise (eco)	24 dB
operating power consumption	250W
lamp life (eco mode)	30000 h
width	230 mm
height	170 mm
thickness	250 mm
weight	3800 g
Has a dedicated smartphone app	✓
volume	9775 cm³

The BenQ TK705STi uses a laser light source rated for 20000 hours of standard operation, extending to 30000 hours in eco mode, which also reduces audible noise from 26 dB down to 24 dB. Operating power consumption is 250W. The unit measures 230 mm wide, 170 mm tall, and 250 mm deep, with a total volume of 9775 cm³ and a weight of 3800 g, giving it a relatively compact footprint for a 4K laser projector. It also supports a dedicated smartphone app for added control flexibility.

Projection quality:

ANSI lumens	3000 lumens
output resolution	4K
response time	5 ms
has motorized focus	✓
maximum projection size	160"
has motorized zoom	✕
supports HDR10+	✓
bit depth	10-bit
has manual focus	✕
minimum throw distance	0.8 m
refresh rate	60Hz
supports HDR10	✓
supports HLG	✓

The TK705STi outputs at 4K resolution with a brightness of 3000 ANSI lumens and a 10-bit color depth, supporting HDR10, HDR10+, and HLG for broad high dynamic range compatibility. It has a refresh rate of 60Hz and a response time of 5 ms. The projector can display images up to 160″ from a minimum throw distance of 0.8 m, and focus is handled via motorized focus — manual focus is not available, nor is motorized zoom.

Connectivity:

HDMI ports	2
has AirPlay	✓
Has Bluetooth	✓
supports Wi-Fi	✕
USB ports	2
has Chromecast built-in	✓
has a VGA connector	✕
has a DVI connector	✕
supports Miracast	✕
RJ45 ports	0
Has S/PDIF Out port	✓

For wired connections, the TK705STi provides two HDMI ports and two USB ports, along with an S/PDIF output for digital audio; there are no RJ45, VGA, or DVI ports. On the wireless side, it includes Chromecast built-in and AirPlay for cable-free streaming, as well as Bluetooth — however, Wi-Fi and Miracast are not supported.

Features:

has stereo speakers	✓
has lens shift (vertical)	✕
has lens shift (horizontal)	✕
has a remote control	✓
has built-in smart TV	✓
has a built-in speaker	✓
audio input ports	0
audio output power	2 x 8W
has a socket for a 3.5 mm audio jack	✓
has an external memory slot	✕
has voice commands	✕

The TK705STi includes a built-in smart TV platform and comes with a remote control for navigation. Audio is handled by built-in stereo speakers delivering 2 x 8W of output power, and a 3.5 mm headset jack is available for private listening; there are no audio input ports. Neither vertical nor horizontal lens shift is supported, and the unit lacks both an external memory slot and voice command functionality.

Final Verdict

The BenQ TK705STi is a well-specified 4K laser projector that brings together a long-lasting light source, broad HDR format support, and a self-contained smart platform in a compact, manageable form factor. Its laser light source rated for up to 30000 hours in eco mode stands out as a defining strength, paired with 3000 ANSI lumens, 10-bit color, and wireless casting via Chromecast and AirPlay for a genuinely flexible home viewing setup. Installation constraints — particularly the absence of lens shift and Wi-Fi — mean it rewards careful placement planning and suits users who are clear about how they intend to use it. For those building a dedicated home theater space with straightforward setup needs and a preference for low long-term maintenance, the TK705STi represents a cohesive and capable option.