Optoma ML750i

Brand	Optoma
Type	Portable
Released	August 2025
Resolution	WXGA
Imaging technology	DLP
Light source type	LED
ANSI lumens	450 lm
Throw ratio	1.5:1
Input lag (rated)	1920×1080 @ 60 Hz: 16.6 ms

A palm-sized single-chip DLP projector with an RGB LED light source and a native 1280x800 (WXGA) image, rated at 450 ANSI lumens. It has one HDMI 1.4b input, a microSD slot and USB-A for playing files without a computer, a mono speaker, and runs a customised Android for apps and casting. It suits presentations and travel use rather than a dedicated home cinema.

Data sheet

Picture

Imaging technology	DLP
Number of imaging devices	1
Native aspect ratio	16:10
Native resolution	1280 × 800
Dynamic contrast	20,000:1
Input lag (rated)	1920×1080 @ 60 Hz: 16.6 ms
3D support	Yes

Optics

Throw ratio	1.5:1
Projection distance table	30″: 0.97 m · 40″: 1.29 m · 50″: 1.62 m · 60″: 1.94 m · 70″: 2.26 m · 80″: 2.58 m
Zoom type	None
Focus	Manual
Vertical lens shift	0%
Fixed offset	100%
Focal length	14.95 mm
F-number	1.9
Interchangeable lens	No
Image size range	17–100 in
Vertical keystone	-40–40°

Light source

Light source type	LED
Light source detail	Red, green and blue LEDs
Light source life	Rated: 20,000 h
Life definition	Unspecified
ANSI lumens	450 lm ANSI	ANSI
Claimed brightness (non-standard)	700
Claimed brightness unit	Unspecified
Brightness uniformity (centre-to-corner)	85%

Audio

Speaker power	2 W
Speaker count	1
Audio channels	Mono
Audio outputs	3.5 mm

Inputs, control & connectivity

Max input signal	1920 × 1080
HDMI port count	1
HDMI ports (feature-level)	HDMI: HDMI 1.4b
Horizontal scan frequency	15.38–91.15 kHz
Vertical scan frequency	24–85 Hz
USB media playback	Yes
RS-232	Yes
Auto keystone	Yes

Firmware / software

Smart OS

Android (uncertified)

Environment & power

Operating temperature	0–40°C
Operating humidity	10–80%RH
Altitude / high-altitude mode	2,500 m
Operating orientations	Table, Ceiling, Rear
Rated voltage	100–240 V
Rated frequency	50–60 Hz
Power consumption (max)	67 W
Power consumption by mode	Bright typical 110v: 60 W · Bright max 110v: 69 W · Bright typical 220v: 57 W · Bright max 220v: 66 W · Eco typical 110v: 25 W · Eco max 110v: 29 W · Eco typical 220v: 23 W · Eco max 220v: 27 W
Standby power	0.5 W
Power supply	External brick
Fan noise (sound pressure)	Min: 29 dB(A) · Max: 32 dB(A)

Physical & installation

Width	105 mm
Depth	106 mm
Height	39 mm
Weight	0.43 kg
Tripod socket	Yes

Support & ownership

Warranty	🇺🇸 US 1 yr
Light-source warranty	5 years or 12,000 hours (US)
User manual	https://region-resource.optoma.com/products/import/Documents/1879f1af-9587-4088-a150-cad4681dca36.pdf
Safety & market certifications	FCC

In the box

Box contents	Carry case, Io cable, Power cord, Remote, Batteries, Quick start guide, Rs232 adapter
Remote type	IR

Tools

Throw calculator — How far from the screen the ML750i needs to sit for a given image size, set to its 1.5:1 lens.
Download spec as CSV — Every value on this data sheet with its unit and source, one row per spec.
Download spec as JSON — The same data from the open data API, with variants and identifiers.