Optoma N3751K

Overview

The Optoma N3751K is a 75-inch UHD 4K commercial monitor designed to deliver sharp and vibrant visuals in environments where clarity and reliability are essential. With a resolution of 3840 x 2160 and 450 nits of brightness, it ensures images remain clear even in well-lit spaces such as lobbies, classrooms, and meeting rooms. Running on Android 11 with 4GB of RAM and 32GB of storage, this monitor supports smooth app performance and media playback without the need for additional devices.

Its built-in media player and wireless Display Share app simplify content presentation and collaboration, while multiple connectivity options including HDMI, USB-C, Wi-Fi, and Bluetooth make it easy to connect a variety of devices. Designed for continuous 24/7 operation, the N3751K is a dependable solution for professional settings requiring constant, high-quality display performance.

Key features

• 75-inch UHD 4K screen that delivers detailed and vibrant images for group viewing
• 450 nits brightness to maintain visibility in bright or well-lit environments
• Built-in media player allows direct playback of videos and playlists without external hardware
• Display Share app enables wireless mirroring from phones or laptops for seamless presentations
• Android 11 platform with 4GB RAM and 32GB storage supports smooth multitasking and app use
• Wi-Fi and Bluetooth connectivity simplify device pairing and network access
• Dual 10W speakers provide clear audio to complement visual content
• Three HDMI inputs and multiple USB ports, including USB-C, offer versatile device connections
• Designed for 24/7 operation, ensuring reliable performance in demanding commercial environments

Key specs

• Display size: 75 inches
• Resolution: UHD 4K (3840 x 2160)
• Brightness: 450 nits
• Operating system: Android 11
• Memory: 4GB RAM
• Storage: 32GB internal
• Audio: Dual 10W built-in speakers
• Connectivity: Wi-Fi, Bluetooth, 3 HDMI ports, 1 USB-C port, 2 USB-A ports
• Designed for continuous 24/7 operation

Connectivity and compatibility

This monitor offers a range of connectivity options to fit into various setups. The three HDMI inputs allow multiple devices such as laptops, streaming boxes, or media players to be connected simultaneously. USB-C and USB-A ports provide additional flexibility for peripherals and external storage. Built-in Wi-Fi and Bluetooth support wireless connections, enabling easy content sharing and device pairing without cables.

• Three HDMI ports for connecting multiple video sources
• USB-C port for modern devices and fast data transfer
• Two USB-A ports for accessories and external drives
• Wi-Fi for network access and wireless content streaming
• Bluetooth for connecting audio devices or peripherals

Performance and reliability

Engineered for continuous use, the Optoma N3751K is built to operate 24/7 without compromising performance. Its Android 11 system ensures compatibility with a wide range of apps and media formats, while the 4GB RAM supports smooth multitasking. The 450-nit brightness level keeps the display visible in bright environments, making it suitable for commercial spaces that require constant, clear information display.

Ideal uses and environments

This commercial monitor fits well in settings such as corporate lobbies, classrooms, conference rooms, and retail spaces where clear, high-resolution visuals are needed to communicate information effectively. Its wireless mirroring and built-in media player make it a strong choice for interactive presentations and digital signage, while the robust design supports continuous operation in busy professional environments.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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