Optoma
Optoma ZK431ST-B 4K Projector
Optoma ZK431ST-B 4K Projector
Couldn't load pickup availability
- Johannesburg, Cape Town, Durban, Pretoria: 2–4 business days after payment confirmation.
- Secondary cities and towns: 3–6 business days.
- Outlying and remote areas: 5–7 business days.
- Nationwide delivery options and terms are listed in our shipping policy.
Delivery timelines begin once full payment has been confirmed. All orders are shipped via fast, insured courier. You will receive a tracking number by email once your order is dispatched. View full shipping policy →
- EFT (Electronic Funds Transfer) — Direct bank transfer from any South African bank account. No additional fees. Orders confirmed within 1 business day of payment reflecting.
- Cross Border Transfer — For customers in SADC neighbouring countries (Lesotho, Zimbabwe, Mozambique, Namibia, Botswana, Eswatini). Invoices settle in ZAR; direct delivery is within South Africa only, and cross-border orders are handled on a collection/freight-forwarder basis.
- Wire Transfer — For international customers outside the SADC region. Proforma invoices are processed in ZAR value; direct delivery is within South Africa only, with collection/freight-forwarder arrangements required for export orders.
Orders are confirmed once payment reflects. Banking details are provided in your order confirmation email. View payment details →
- This item is listed as new, genuine, and includes VisionSounds warranty support.
- Warranty terms vary by product and are handled by VisionSounds. Contact us to confirm the exact coverage before ordering.
- Returns accepted within 7 days of receipt in original, unused condition with original packaging.
- Faulty or incorrect items: VisionSounds covers return shipping costs.
Bring a sharper, brighter 4K image into rooms where space is limited but image quality still matters. The Optoma ZK431ST-B 4K Projector is a compact short-throw laser projector for home cinema rooms, golf simulator bays, boardrooms, training spaces and premium entertainment setups that need a large picture from a shorter installation distance.
Its 4K UHD resolution gives movies, sport, presentations and simulation visuals the extra detail that becomes noticeable on larger screens. With 4,100 lumens of brightness, the ZK431ST-B is also practical in rooms that are not completely dark, making it useful for mixed-use spaces where lighting control is not always perfect.
The laser light source is a major advantage for customers who want lower maintenance and long-term reliability. Instead of planning around regular lamp replacements, the projector is designed for extended use with up to 30,000 hours of light-source life, depending on usage mode and environment.
Why It Stands Out
- True 4K UHD resolution for detailed big-screen viewing
- 4,100 lumens brightness for home cinema, simulator and business spaces
- Short throw ratio of 0.496 for large images from shorter distances
- Laser light source with up to 30,000 hours of life
- High 300,000:1 contrast ratio for stronger perceived depth
- Four-corner correction for easier image alignment
- Supports 16:9, 16:10 and 4:3 screen formats
- Compact chassis for neat installations where space is tight
Ideal For
This projector is a strong fit for customers comparing 4K projectors and screens for a home cinema room, golf simulator, media room, boardroom or premium training space. It is especially useful when you want a large image but cannot place the projector far back from the screen.
Key Specifications
- Resolution: 4K UHD, 3840 x 2160
- Brightness: 4,100 lumens
- Light source: Laser
- Light-source life: Up to 30,000 hours
- Native aspect ratio: 16:9
- Supported aspect ratios: 16:9, 16:10 and 4:3
- Contrast ratio: 300,000:1
- Throw ratio: 0.496
- Approximate dimensions: 10.8 x 4.3 x 8.5 inches
- Approximate weight: 6.3 lb
- SKU: OPTOMA-ZK431ST-B
Buying Notes
For the best result, match the projector with the right screen size, throw distance and room lighting. If you are planning a full setup, compare it with projector screens, AV receivers and amplifiers and home cinema speakers so the image and sound system work together.
Need help checking whether this Optoma projector suits your room, simulator bay or screen size? Contact VisionSounds with your viewing distance, screen width and installation position, and we can help you confirm the practical fit before ordering.
Share
