Hollyland COSMO C1 Wireless SDI/HDMI Transmission System
SKU: 320813313

Hollyland COSMO C1 Wireless SDI/HDMI Transmission System

Sale price$346.05 Regular price$384.50
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Description

Hollyland COSMO C1 Wireless SDI/HDMI Transmission SystemThe newest member of Hollylands COSMO series, the COSMO C1, establishes a new standard for real time video monitoring at up to 1,000ft line of sight, thanks to Hollyland's transformative HEVO wireless transmission technology. With COSMO C1, you finally have a complete, but simple, solution for streaming and cloud sharing your video creativity. Designed for precise follow focus and high image clarity, COSMO C1 is a silver bullet for videographers and

The newest member of Hollyland’s COSMO series, the COSMO C1, establishes a new standard for real-time video monitoring at up to 1,000ft line-of-sight, thanks to Hollyland's transformative HEVO wireless transmission technology. With COSMO C1, you finally have a complete, but simple, solution for streaming and cloud-sharing your video creativity. Designed for precise follow focus and high image clarity, COSMO C1 is a silver bullet for videographers and focus pullers. It’s time to say “Hi” to a whole-new smooth viewing experience.

Smooth video, even in challenging situations

COSMO C1’s boosted signal strength and superior anti-interference capability in the 5.1GHz-5.8GHz spectrum guarantee buttery-smooth video transmission, even in complex environments. The COSMO C1 is also the first in its field to integrate UVC (USB Video Capture) technology, COSMO C1 offers a whole simplified solution to stream and cloud-share your video works.

HEVO uses adaptive frequency hopping (AFH), in only 0.001 seconds, at both receiving and transmitting ends, plus seamless re-transmission technology. Together, these features give you exceptional reliability, boosted signal strength, and superior anti-interference performance. No matter whether you’re using manual or auto-switching modes, you can wave goodbye to flickering, glitches, and black screens. Moreover, you can simultaneously run four of these video transmission systems at one location without compromising on smooth video delivery.

Simple USB-C connectivity

With COSMO C1, you only need one USB-C connection to provide full 1080P60 HD video quality to a computer for direct live streaming, thanks to HEVO’s support for UVC (USB Video Capture). There’s no video capture device needed, and no additional settings. You just have to connect one simple USB-C cable and it just works!

HEVO brings ultra-low latency and glitch-free performance

Based on Hollyland's self-developed protocol, HEVO technology improves video coding efficiency by 30%. The acceleration module embedded in COSMO C1 achieves ultra-low latency as low as 40ms, aided by HEVO’s fast adaptive frequency hopping (AFH) and seamless retransmitting technology. There is no compromise on image output and transmission latency within a wide 1,000ft LOS range.

Unparalleled compatibility and flexibility

COSMO C1 supports HDMI and SDI connections on both TX and RX units, plus an SDI loop-out on the TX unit. It can work with any mainstream camera, monitor, or switcher. In addition, there are three power supply options to escort in different shooting scenes. DC power supply is great for indoor projects, while the N-PF/L-series battery and power-capable USB-C port help make the unit portable for run and gun missions. The red low battery indicator lets you know when you have 20 minutes of battery power remaining, to prevent last-minute panics.

Provides everything you need

The COSMO C1’s highlights include up to 1,000ft LOS range, superior anti-interference making it possible to run four systems at one location, HEVO for low latency and stable frequency hopping, full 1080P60 HD video over a single USB cable, vertical and horizontal mounting options, and three versatile power supply options.

Features

  • As low as 40ms Transmission Latency                                                     
  • 1000ft Wireless Transmission Range (LOS)                                 
  • Supports Smart Channel Selection
  • Transmitter Supports SDI Input, HDMI Input, and SDI Loop out.
  • Receiver Supports 2*SDI Outputs and HDMI output
  • Supports DC Power Supply, Battery, and USB Type-C Power Supply
  • Supports UVC Pull-streaming

In the Box:

  • 1x Transmitter
  • 1x Receiver   
  • 4x Antenna
  • 2x Mushroom Antenna
  • 1x Cold Shoe
  • 1x Magic Arm
  • 1x Type-C Converter
  • 1x DC Adapter
  • Warranty Card     
  • Expansion Accessory       

Specifications

 

Transmitter

Receiver

Interfaces

Antenna Interface(RP-SMA Male)

HDMI Input(Type A Female)

SDI Input

SDI Loopout

DC Input

USB Type-C

Antenna Interface(RP-SMA Male)

HDMI Input(Type A Female)

SDI Output*2

DC Input

USB Type-C

Power Supply 

DC Power Input: 6~16V

USB Type-C Power Supply: 5V/2A

Battery Power Supply: 6-16V 

DC Power Input: 6~16V

USB Type-C Power Supply: 5V/2A

Battery Power Supply: 6-16V  

Power Consumption

<9W

<9W

Weight

214g(Without Exterior Antenna)

210g(Without Exterior Antenna)

Dimension

(L*W*H) 115*70*32mm(Battery Plate Excluded)

(L*W*H) 115*70*32mm(Battery Plate Excluded)

Input/Output Video Format

HDMI:

480p60
576p50
720p50/59.94/60

1080i50/59.94/60

1080p23.98/24/25/29.9/30
1080p50/59.94/60

 

SDI:
1080p60/59.94/50(Level A)

1080p60/59.94/50(Level B)

1080i60/59.94/50

1080p30/29.97/25/24/23.98
1080psf25

720p60/59.94/50

1080psf24/23.98

HDMI:

480p60

576p50

720p50/60

1080i50/60

1080p24/25/30

1080p50/60

 

SDI:

1080p60/59/50(Level A)

1080i60/59/50

1080p30/29/25/24/23

1080psf25/24/23

720p60/59/50

Frequency

5.1GHz~5.8GHz

5.1GHz~5.8GHz

Transmission Power

Maximum 22dBm

 

Receiver Sensitivity

 

-80dBm

Transmission Latency

As low as 40ms

Bandwidth

20MHz

20MHz

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 320813313

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Dexter
Birmingham, US
★★★★★ 5
Nice
Size: 3 Fl Oz (Pack of 1)
I really like it. Good sun protection factor of 50. And, not heavy feeling or greasy.
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Reviewed in the United States on May 13, 2026
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Dog-yeared
Houston, US
★★★★★ 5
Different and a delight.
Size: 3 Fl Oz (Pack of 1)
If this is really working, it is terrific. Not claggy, not greasy, smells light and not whitish.
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Reviewed in the United States on April 7, 2026
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CyndiS
Fort Morgan, US
★★★★★ 3
Not terrible, but I won't be repurchasing
Size: 3 Fl Oz (Pack of 1)
2.5 stars from me. I've been using this as a near-daily sunscreen for 3 months. I like it better than some other sunscreens I've used, but I'm dragging my feet to use the rest of the bottle haha. And I definitely won't repurchase. I'm hoping there's a magical sunscreen out there waiting for me that I love... Pros: It doesn't leave a whitecast, it doesn't pill, it presumably blocks the sun! Cons: If I put it anywhere near my eyes it will get in them, I will taste it in my mouth if it's applied anywhere near my mouth, it stays shiny throughout the day, I feel like I'm not allowed to touch my face (This may just be all sunscreens though)
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Reviewed in the United States on April 9, 2026
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Verified Purchase
Jessica2049
Cuba, US
★★★★★ 5
Perfect Travel Size TSA approved size
Size: 3 Fl Oz (Pack of 2), Style: SPF 50
I recently bought the Coppertone SPORT Sunscreen SPF 50 Lotion in travel size for my son’s first trip to Cancun alone, and I have to say, it was a fantastic choice! Whether you're headed to a sunny beach, a day of fishing, or just need reliable protection from the sun, this sunscreen delivers. Here’s my review based on its performance during the trip: Convenience and Travel-Friendly: The travel size is perfect for anyone on the go. It’s small enough to meet TSA guidelines for carry-ons, so you don’t have to worry about checking luggage or dealing with oversized bottles at security. My son was able to easily pack it in his carry-on without any hassle. Additionally, the compact size makes it super convenient to throw into a pocket or backpack for a day of fishing, beach trips, or any outdoor adventure. Sun Protection: The SPF 50 provides excellent protection from harmful UVA and UVB rays, which is especially important for long hours spent in the sun. Cancun’s sun can be intense, and my son was out in the elements for several hours each day (and I wasn't there to remind him to reapply sunscreen), whether he was fishing, swimming, or just relaxing at the beach. He didn’t get burned once!! As a mother of a redheaded 18 year old son I've spent the past 18 years of my life ensuring he wasn't scorched by the sun and Coppertone has yet to let us down! Water Resistance: The water-resistant formula is a huge plus, especially in places like Cancun, where you’ll likely be in and out of the water. My son spent plenty of time swimming and snorkeling, and the sunscreen stayed put. It lasted through sweating, splashing, and even sea water exposure without needing constant reapplication. It’s perfect for active outdoor activities, whether you're swimming, surfing, or just sweating it out in the sun. Mother approved!!
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Reviewed in the United States on November 9, 2024
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Linda NYC
Lowell, US
★★★★★ 5
Dries clear, moisturizing, silky, great value
Size: 5 Fl Oz (Pack of 1), Style: SPF 50
I have fair to light combination skin. I use this on my body, but not my face. It goes on very thick and white, but sinks into the skin lightning fast (within just a few seconds), and it becomes completely invisible. It leaves my skin moisturized and looking and feeling silky. Best body sunscreen I've ever tried. And I love that it is water resistant! I find it too heavy and moisturizing to use on my face, but people with dry skin would probably love it for the face, too. I imagine it would be fantastic for them under makeup. The price per ounce is very reasonable, making it a great value.
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Reviewed in the United States on June 5, 2026

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