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Description
Hollyland MARS 4K Wireless Video TransmitterAdd up to 4K30 wireless video transmission to your gimbal, mirrorless, or DSLR camera rig using the lightweight Mars 4K Wireless Video Transmitter from Hollyland. The transmitter provides HDMI and SDI inputs and features extremely low 66 ms latency with line of sight transmission up to 450' to an optional receiver. Using the Hollyview app for iOS or Android, you can monitor your video transmission in real time via a Wi Fi connection to your tablet or
Add up to 4K30 wireless video transmission to your gimbal, mirrorless, or DSLR camera rig using the lightweight Mars 4K Wireless Video Transmitter from Hollyland. The transmitter provides HDMI and SDI inputs and features extremely low 66 ms latency with line-of-sight transmission up to 450' to an optional receiver.
Using the Hollyview app for iOS or Android, you can monitor your video transmission in real time via a Wi-Fi connection to your tablet or smartphone. The unit also features a built-in frequency scanner to select the clearest frequency for your transmission. The Mars 4K transmitter is compact in size, features a bright touchscreen LCD display for configuration, and is built with a corrosion-resistant housing. The unit can be powered using a USB-C source, the included locking DC power adapter, or by using a separately available L-series type battery using an optional battery plate.
UHD 4K Video Transmission
The Mars 4K supports UHD 4K30 video transmission for the discerning videographer looking for high-resolution production capability. The Mars 4K also supports FHD and HD formats at varying frame rates such as 24, 30, and 60p.
Long Range and Low Latency
The Mars 4K transmits a long line-of-sight range of 450' and an ultralow latency of 66 ms. Its upgraded dual-core codec chip is capable of a 12 Mb/s data transfer rate.
HDMI and SDI Interfaces
The Mars 4K transmitter supports HDMI and SDI inputs for expanded connectivity and compatibility. The SDI ports provide expanded frame rate flexibility for broadcast and production frame rate standards and compatibility through production and postproduction.
Form Factor
The Mars 4K features corrosion and wear resistance for durability. The design form factor optimizes operational functionality for fast configurations with wiggle-free, bullet-styled antennas attached.
Smart Channel Scanning
Channel assignment options allow for interference-free transmission. A stable connection is possible automatically upon startup. An intelligent channel scan helps determine which ones are occupied and selectable.
Color Touchscreen LCD
The Mars 4K features a color touch LCD with a user-friendly UI design that enables quick configuration and status checks. Its gamepad-styled button dramatically improves the operational setup experience.
Multiple Power Options
The Mars 4K supports various DC power options: 6 to 16 VDC coax input, L-series/NP-F batteries, and USB-C chargers.
App Monitoring
The Hollyview app for Android and iOS allows you to monitor your transmission on a smartphone or tablet. It allows you to transmit to apps and receivers in the following configurations:
- Transmitter to 1 receiver + 2 apps
- Transmitter to 4 apps
- Mars M1 wireless transceiver monitor to 1 receiver and 2 apps
Specifications
Inputs / Outputs
| Antenna I/O | 2 x RP-SMA Male |
| Video I/O | 1 x HDMI Input 1 x BNC Input |
| Embedded Audio | HDMI/SDI |
| Audio I/O | None |
| Power I/O | 1 x Barrel Input 1 x USB-C Input |
Wireless
| Wireless Range | 450' / 137.2 m (Line-of-Sight) |
| Channel Bandwidth | 20 MHz |
| Frequency Range | US: 5.1 to 5.8 GHz |
| Latency | 66 ms |
| RF Power | 21 dBm |
| Wi-Fi | Wi-Fi 4 (802.11n) |
| Bluetooth | None |
| Mobile App Compatible | Yes |
Format Support
| Video Format | HDMI UHD 4K: 30 1080p: 60/30/24 SDI 1080p: 60/59.94/30/29.97/24/23.98 |
| Timecode Support | Yes |
Power
| DC Input Power | 6 to 16 VDC |
| Power Consumption | 8.5 W |
Mounting
| Mounting | 1 x 1/4"-20 Female |
Environmental
| IP Rating | None |
| Environmental Protection | None |
| Operating Temperature | 14 to 140°F / -10 to 60°C |
| Storage Temperature | -40 to 140°F / -40 to 60°C |
General
| Dimensions | 4.5 x 2.6 x 1.3" / 115 x 65 x 32 mm |
| Weight | 7.9 oz / 223 g, Excluding Antenna |
Packaging Info
| Package Weight | 1.56 lb |
| Box Dimensions (LxWxH) | 8.1 x 5.7 x 3.1" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Comfortable
Size: One Size, Color: (348) Silica Green / White / Titan Gray
Comfortable and stays in place
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Reviewed in the United States on May 27, 2025
★★★★★ 5
Best socks for work or working out.
Size: One Size, Color: (015) Tetra Gray / Gray Matter / White Quartz
Great socks. They stay on your heel! Love the material; breathable and not thick. Love the neutral tone colors.
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Reviewed in the United States on January 1, 2025
★★★★★ 3
Didn’t meet full expectations
Size: One Size, Color: (001) Black / Black / Jet Gray
Much shorter than anticipated.
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Reviewed in the United States on December 16, 2025
★★★★★ 5
Completed by myself but 2 is faster
Color: Classic Cherry, Size: L:29.80" x W:12.99" x H:71.26", Color: Classic Cherry, Size: L:29.80" x W:12.99" x H:71.26"
This bookshelf was the closest to what I was looking for. My current bedroom theme is sort of a cross between medieval castle/Hogwarts mixed with Disney and anime. The bookshelf has the “fancy library” feel that I was going for and the nice rich color of the brown goes so well with the grey stone background of the wall. I would love to order a second one but my room isn’t big enough. The top half I use for the small handful of my favorite books “since I have a lot of books in storage” and the lower half of the shelf, behind the doors, was supposed to be for movies but I decided to store my video games there instead. There’s also plenty of room at the edge of the shelves in front of the books for small knickknacks.
The shelf is decent in sturdiness and weight and the wood is typical particles but still pretty thick. The cardboard backing was also easy to hammer on.
However, I do have a couple of complaints during assembly.
1) The cupboard doors need to be held exactly where you want them and either you need to have something hold them in place, or else have a second person hold them in place for you. Otherwise one door will scrape against the top or bottom edge of the frame, or there will be a weird gap between the doors when closed. Also, the back of the door handles have two little pegs sticking out and the cupboard doors have a little hole where the pegs should go. However, the holes are not aligned and the first time I attached the handles, one handle ended up being higher than the other. After a while, I had the idea of removing the handles and switching the doors. Once I did that, the handles were aligned correctly. But neither door or handle is marked, so there’s no way of knowing the handles won’t line up until you try putting the handles on. Bit annoying.
2) One of the final steps is to attach the trim to the individual shelves. If you look at the front of each of the two top shelves in my pictures, you will notice the thickness of the front edge. That is actually a separate piece of wood that needs to be attached. However, there are no holes to put the screws through. Instead there is a narrow opening that runs along the entire length like a thin trench. The screw goes through the opening until it reaches the bottom and then goes through the wood. Once they are attached, you can wedge the shelves into the bookshelf. However, if it turns out that the trim is uneven and there is an annoying gap on one side (which there more than likely will be) you CAN NOT unscrew it, readjust it, and screw it on again. That will split the wood. It happened to me with both trims. Now both trims tilt downward a tiny bit.
Other than those two issues, this shelf is great. I managed to assemble it myself but it took me nearly 3 hours and I was assembling it in a narrow hallway. Definitely would have been faster if I had help and more space to work but was still doable alone. Despite the setbacks, I still give this 5 stars. Mostly for aesthetics, sturdiness, depth of the shelves, and the ability to assemble it alone.
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Reviewed in the United States on July 15, 2021
★★★★★ 5
Absolutely love it?
Color: Classic Cherry, Size: L:29.80" x W:12.99" x H:71.26", Color: Classic Cherry, Size: L:29.80" x W:12.99" x H:71.26"
Five-Star Review: Sauder Heritage Hill Library with Doors/Book Shelf
I am genuinely impressed with this Sauder Heritage Hill Library. It combines classic style with practical storage, making it a standout addition to any living room or home office.
Timeless Design:** The Classic Cherry finish exudes warmth and traditional charm. The molding, paneling, and overall silhouette instantly elevate the room’s decor, pairing well with both antique and contemporary furnishings.
Generous Storage:** With a full bookcase on top and two doors below, there’s ample space for books, decorative accents, and office essentials. The combination of open shelving and enclosed storage helps keep the area tidy while still displaying favorite items.
Perfect Dimensions:** Measuring L: 29.80" x W: 12.99" x H: 71.26", it fits nicely in a variety of spaces—from compact living rooms to home offices. It doesn’t overwhelm a room and still provides substantial storage.
Solid Construction:** The piece feels sturdy and well-made. The materials and craftsmanship reflect Sauder’s reputation for durability, giving me confidence it will endure daily use for years.
Easy Assembly:** While any bookshelf can be a bit of a project, the assembly process was straightforward with clear instructions. The hardware and fittings lined up as expected, and it came together without issue.
Versatile Styling:** The neutral cherry finish blends with a range of color schemes—from rich burgundies and creams to soft grays and blues. It’s easy to accessorize with framed photos, lamps, and keepsakes.
Practical Features:** The doors on the bottom are great for concealing clutter, while the open shelves top show off favorites. The overall footprint is efficient for maximizing storage without sacrificing style.
Value:** Given the blend of classic aesthetics, functional shelving, and robust build, this is excellent value for money in its category.
If you’re looking for a stylish, durable, and versatile library with doors that adds character and organized storage to your space, the Sauder Heritage Hill Library is a superb choice. Five stars from me. Highly recommended!
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Reviewed in the United States on October 11, 2025