Optoma GT2100HDR Short Throw Laser Projector
- Native Resolution: 1920 x 1080
- Display Resolution Maximum: 1080p
- Brightness: 4200 lumens
- Projector Maximum White Brightness: 4200 lumens
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A bright, compact short-throw laser projector that's proven itself for golf simulator setups, though check your expectations on native resolution and built-in audio first.
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ASIN: B0C4KWSFBWModel: GT2100HDRCategory: Video Projectors
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Overview
Optoma's GT2100HDR is a short-throw laser projector rated at 4,200 lumens, native 1080p resolution with support for 4K HDR input, aimed at home theater and gaming use in tighter rooms.
One reviewer's experience is worth noting directly: it accepts a 4K signal over HDMI but the projector itself displays at 1080p, not native 4K, a distinction the marketing name blurs.
- 4,200 lumens, 1080p with 4K HDR input
- 120 inch image from 4'4" throw distance
- DuraCore laser rated 30,000 hours
- IPX6 dust resistance rating
Who it's for
Anyone setting up a golf simulator or home theater in a room too short for a long-throw projector. Not the right pick for buyers who specifically want native 4K resolution.
Pros and cons
- Bright enough for daytime viewing at 4,200 lumens
- Short throw lens fits small rooms and golf sim enclosures
- Laser light source rated for 30,000 hours
- Accepts 4K input but displays at 1080p, not native 4K
- Focus ring described as stiff by a reviewer
- Built-in speaker considered weak, an external audio source recommended
- Some reliability reports, including a dead-on-arrival unit and one failure just past a year
Performance notes
DuraCore laser lighting is rated for up to 30,000 hours of maintenance-free use, with an IPX6 rating for dust resistance. The short throw lens throws a 120 inch image from about 4'4", and 4,200 lumens keeps the picture visible in daylight as well as darkened rooms.
Specifications
| Brand | Optoma |
|---|---|
| Model | GT2100HDR |
| Dimensions & fit | |
| Maximum Image Size | 123 Inches |
| Item Weight | 6.6 pounds |
| Item Dimensions L x W x H | 10.8 × 8.5 × 4.5 inches |
| Power & efficiency | |
| Wattage | 119 watts |
| Voltage | 110 volts |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Hardware Connectivity | 3.5mm Audio, HDMI, USB |
| Connectivity Technology | RCA |
| Mounting Type | Tabletop Mount |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Native Resolution | 1920 x 1080 |
| Display Resolution Maximum | 1080p |
| Brightness | 4200 lumenshigher than 80% of 26 video projectors |
| Projector Maximum White Brightness | 4200 lumenshigher than 83% of 25 video projectors |
| Contrast Ratio | 300000:1 |
| Minimum Throw Distance | 1.3 feetlower than 94% of 34 video projectors |
| Maximum Throw Distance | 10.5 feetlower than 79% of 35 video projectors |
| Display Type | Projector |
| Form Factor | Portable |
| Light Source Operating Life | 30000 hourslower than 70% of 21 video projectors |
| Control Type | Remote |
| Video Encoding | H.265 (HEVC) |
| Antenna Location | Business, Education, Gaming, Home Cinema |
| Mfr Part Number | GT2100HDR |
| Picture Quality Enhancement Technology | DuraCore Laser Technology |
| BuiltIn Media | User Manual |
Closest rivals on specs
Thunrlge HY300 Mini Portable Projector- Minimum Throw Distance 1.3 vs 1.6 feet (-19%)
Epson Lifestudio Flex Plus 4K PRO-UHD Smart Projector- Brightness 4200 vs 1000 lumens (+320%)
- Light Source Operating Life 30000 vs 20000 hours (+50%)
- Minimum Throw Distance 1.3 vs 2 feet (-35%)
Hisense PX3-PRO Ultra Short Throw Laser Projector- Maximum Throw Distance 10.5 vs 0.4 feet (+2525%)
- Minimum Throw Distance 1.3 vs 1.5 feet (-13%)
- Projector Maximum White Brightness 4200 vs 3000 lumens (+40%)
Frequently asked questions
How far does the Optoma GT2100HDR need to sit from the screen for a 120 inch image?
About 4 feet 4 inches, thanks to its short throw lens.
Does the GT2100HDR display native 4K?
No. It accepts a 4K HDR signal over HDMI but its native display resolution is 1080p.
How long does the laser light source last?
Optoma rates the DuraCore laser for up to 30,000 hours of maintenance-free operation.