
Optoma ML750i Ultra-Portable WXGA LED Projector
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- Sourced through UK distribution
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
Description
The Optoma ML750i is an ultra-portable LED projector weighing 425g and small enough to hold in one hand. It is built for moving between home, office and client sites rather than for fixed installation.
Resolution is WXGA 1280x800 with 700 lumens (450 ANSI) and a 20,000:1 contrast ratio. The fixed 1.5:1 lens covers screen sizes from 30 to 80 inches at throw distances of 0.55m to 3.23m.
The projector can run without a laptop. Built-in memory, a media player and an office viewer let it play content straight from a USB drive or microSD card, and it supports mirroring and casting from phones and tablets. Auto keystone and auto focus square and sharpen the image on setup.
The LED light source is rated for 20,000 hours. Noise output is low at 29dB to 32dB, and a built-in speaker covers audio.
Note the 450 ANSI lumen figure is the meaningful one when comparing against conventional projectors, so this is best suited to controlled lighting.
Key features
Weighs 425g and fits in one hand, sized for travel between home, office and client sites.
Built-in memory, media player and office viewer run content from USB or microSD with no laptop.
Mirror and cast from phones and tablets, with RS232 control for hidden installs.
Auto keystone and auto focus square and sharpen the image in seconds.
LED light source rated for 20,000 hours with quiet 29dB to 32dB operation.
Technical specifications
Choose a section to view its specifications.
Display (8)
- Display technology
- DLP
- Resolution
- WXGA (1280x800)
- Brightness
- 700 lm
- ANSI brightness
- 450 lm
- Contrast ratio
- 20,000:1
- Native aspect ratio
- 16:10
- Aspect ratio - compatible
- 4:3, 16:9
- Screen size
- 0.76m - 2.03m (30in - 80in) diagonal
Connectivity (1)
- Inputs
- 1x HDMI 1.4b, 1x microSD card, 1x USB-A reader
Power & Physical (1)
- Weight
- 0.425 kg
Certifications & Warranty (1)
- Warranty
- 12 months
General (12)
- Light source
- LED
- LED life
- 20000 hours
- Throw ratio
- 1.5:1
- Projection distance
- 0.55m - 3.23m
- Zoom type
- Fixed
- Focal length
- 14.95 mm
- Auto keystone
- Yes
- Auto focus
- Yes
- Keystone correction - vertical
- +/-40 degrees
- Control
- RS232 via mini USB
- Noise level
- 29 - 32 dB
- Uniformity
- 85%
Throw distance guide
With its 1.5:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:10 image sizes. Try our throw distance calculator for your exact room.
Manufacturer lens-distance limit: 0.6 m to 3.2 m. The dotted lines show the usable zoom positions for this picture size.
| Image size | Image dimensions | Lens distance |
|---|---|---|
| 40" | 0.86 m × 0.54 m | 1.3 m |
| 60" | 1.29 m × 0.81 m | 1.9 m |
| 80" | 1.72 m × 1.08 m | 2.6 m |
Planning from a real wall? Use the projector screen size calculator to upload a photo, preview the image to scale and find projectors that fit within your maximum available space. Replacing an existing projector? The projector replacement calculator checks whether this lens covers the ratio your current mount needs.
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.
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.
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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.
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Delivery & returns
Estimated delivery 5 Nov - 9 Nov. 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.
Bought in the UK, backed in the UK
This item is sourced through UK distribution and ships to you from within the UK, so the order never crosses a customs border.
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.
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.
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