BenQ

BenQ TH685 1080p 4K HDR Gaming Projector (Renewed)

3.9 (12 reviews)

Immersive Gaming on the Big Screen with Renewed Clarity The BenQ TH685 is a renewed 1080p gaming projector designed to deliver an immersive gaming experience on a big screen. With 4K HDR support, a high refresh rate, and low latency, this projector provides smooth and detailed visuals. Its renewe...

$646.86*
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*Price sourced from Amazon.com. Last updated:Jun 03, 2026.Price and availability are subject to change.

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Overview

Immersive Gaming on the Big Screen with Renewed Clarity

The BenQ TH685 is a renewed 1080p gaming projector designed to deliver an immersive gaming experience on a big screen. With 4K HDR support, a high refresh rate, and low latency, this projector provides smooth and detailed visuals. Its renewed status ensures both performance and value.

  • Resolution: 1080p
  • HDR Support: 4K HDR
  • Refresh Rate: 120Hz
  • Brightness: 3500lm
  • Low Latency: 8.3ms
  • Mode: Enhanced Game Mode

Key Features

AUDIO W/EQUALIZER: integrated 5 watt speaker by treVolo, with an equalizer, for excellence in audio.

1080p 4K HDR READY: 3500 ANSI lumen brightness; 1080p HDR-enabled w/4K compatibility; 100-inch images from 8.2 feet (2.5m) away; stunning color 95% Rec. 709.

HDR COMPATIBLE: HDR10 Technology with 4K input enhances brigher whites and deeper black levels for an enhanced viewing experience

GEARED FOR GAMING: Low latency 8.3ms@1080p/120Hz low input lag, Game Mode/Game Sound Mode fine-tune audio and images, LumiExpert defeats eye strain during extended play.

PRO PERFORMANCE: compatible with major video game consoles (Sony PS4, Nintendo Switch, and Xbox One X, Google stadia), TH685 gaming projector takes big screen TV gaming to a new level with huge, bright, sharp images and equalized audio.

INDUSTRY LEADING WARRANTY: BenQ's 3-year warranty vs. top competitor's 1-year warranty provides a greater peace of mind with coverage that makes you rest easy that our US-based customer service team is here when you need it.

MOVIES, GAMING & MORE: Connect to media players and gaming consoles for big screen movies and gaming; connect a 4K UHD HDMI dongle such as the Amazon Fire TV, Google Chromecast, or Apple TV to play games, stream videos and share photos

Specifications

Brand
BenQ
Model
TH685
Condition
Renewed
Native Resolution
1080p
4K Compatibility
Yes (4K HDR Ready)
Brightness
3500 ANSI Lumen
Color Accuracy
95% Rec. 709
Audio
Integrated 5-watt speaker by treVolo with equalizer
Low Input Lag
8.3ms@1080p/120Hz
Gaming Features
Game Mode, Game Sound Mode, LumiExpert
HDR Support
HDR10 Technology
Warranty
3-year BenQ warranty

Pros & Cons

👍 Pros

  • Delivers 1080p 4K HDR-enabled projection with 3500 ANSI lumen brightness, ensuring vibrant and clear images even in moderately lit rooms.
  • Features low latency of 8.3ms at 1080p/120Hz, providing a highly responsive gaming experience.
  • Includes integrated 5-watt speaker by treVolo with an equalizer, offering excellent audio quality without external speakers.
  • Comes with Game Mode and Game Sound Mode to fine-tune audio and images, enhancing the gaming immersion.
  • Equipped with LumiExpert technology designed to reduce eye strain during extended gaming sessions.
  • Offers broad compatibility with major video game consoles such as Sony PS4, Nintendo Switch, and Xbox One X, as well as Google Stadia.
  • Supports connections to media players and 4K UHD HDMI dongles like Amazon Fire TV, Google Chromecast, or Apple TV for streaming content.
  • Backed by an industry-leading 3-year warranty from BenQ, providing greater peace of mind compared to competitors' shorter warranties.

👎 Cons

  • As a renewed product, it might not come with the same pristine cosmetic condition as a new item, though functionality should be restored.
  • While it is 4K compatible, its native resolution is 1080p, meaning 4K content will be downscaled.
  • The 5-watt integrated speaker, while good, may not provide the immersive audio experience of a dedicated home theater sound system.
  • Lumen output of 3500 ANSI might be too bright for very dark home theater environments, potentially washing out deep blacks.
  • Focuses heavily on gaming features, which might mean some advanced home theater picture processing specific to movies is less emphasized.
  • The projector requires 100-inch images from 8.2 feet away, which dictates room setup and might not suit smaller spaces.

Frequently Asked Questions

The BenQ TH685 projector has a native resolution of 1080p, while also being 4K HDR compatible for enhanced viewing.
This projector boasts a brightness of 3500 ANSI lumens, ensuring clear and vivid images in various lighting conditions.
Yes, it is geared for gaming with low latency of 8.3ms@1080p/120Hz, Game Mode/Game Sound Mode, and LumiExpert to defeat eye strain.
Yes, it features an integrated 5-watt speaker by treVolo, complete with an equalizer for excellent audio performance.
The BenQ TH685 comes with an industry-leading 3-year BenQ warranty, providing extensive coverage and peace of mind.
Yes, you can connect 4K UHD HDMI dongles such as the Amazon Fire TV, Google Chromecast, or Apple TV for streaming videos and sharing photos.
This projector is compatible with major video game consoles including Sony PS4, Nintendo Switch, and Xbox One X, as well as Google Stadia.