Quick Answer
Walksnail Avatar HD is the digital FPV system made by Caddx. It spans three tiers of VTX (1S Lite, Mini, and full-size V2/Moonlight/GT), two goggle options (Goggles X OLED and Ascent LCD), and a standalone VRX module that lets you use any HDMI goggles. The Avatar HD Kit V2 is where most pilots should start; the Moonlight Kit is the image-quality king for cinematic flying.
What Walksnail Actually Is (And Why Caddx Keeps Confusing Everyone)
Walksnail is a brand owned by Caddx. Caddx makes the hardware; Walksnail is the digital video ecosystem name. That is why you see "Caddx Walksnail" on the box and "Walksnail Avatar" in the firmware. The same company, two names, and product pages that swap between them depending on which warehouse listed the item.
The Avatar HD system runs on 5.8GHz digital transmission. It competes with DJI O4 and HDZero. In our workshop, we have built and flown every variant in the lineup, from the 1.4g Nano VTX on 65mm whoops to the full Moonlight kit on 5-inch freestyle rigs. The range we stock covers the entire spectrum from budget micro to cinematic flagship.
The VTX Lineup Explained
1S Lite — Micro Whoop Territory
The Avatar HD Mini 1S Lite Kit weighs under 2g and runs on 1S batteries. This is what made HD whoops possible. We fit these on 65mm and 75mm builds where every fraction of a gram matters. Output is a fraction of a watt, so range is short, but for indoor and backyard flying, it is flawless. The Avatar 1S Module is the newer revision with improved thermal management.
Mini VTX V3 — The Toothpick Sweet Spot
The Avatar HD Mini Air Unit VTX V3 is the go-to for sub-250g long-range and toothpick builds. Around 350mW output, light enough for 3-inch and 4-inch frames, and compatible with the full Avatar goggle range. If you are building a toothpick and want digital video, this is the unit we reach for.
Full-Size V2 and Pro Kits — 5-Inch Standard
The Avatar HD Kit V2 (with Camera V2) and Avatar Pro Kit V2 (with Pro Camera) are the workhorses for 5-inch and larger. The Pro camera has a larger sensor for better low-light performance. Both VTX units output up to 1W, have dual antenna options, and record onboard at 1080p/60fps to built-in storage.
For pilots who already have a camera and just need the transmitter, the VTX V2 Module (Dual Antenna) is available standalone.
Moonlight — The 4K Cinematic Option
The Moonlight HD FPV Kit is the top of the line. It features a 1/1.7-inch sensor recording 4K/60fps to built-in storage, with onboard image processing that rivals a GoPro for cinematic shots. The Moonlight VTX module alone is also available if you already have the camera. Latency in 720p mode drops to around 22ms, which is flyable for freestyle even if it is not as fast as DJI O4 Race Mode at 15ms.
Goggles: Goggles X vs Ascent
Two goggle options exist in the Walksnail ecosystem. The Goggles X feature dual 1080p OLED displays at 100Hz refresh rate with built-in DVR and HDMI input. The OLED panels give noticeably better contrast than DJI LCD goggles, particularly in scenes with foliage and shadow detail. They weigh around 420g.
The Caddx Ascent Goggles are the budget alternative, using 1080p LCD panels at 60Hz. They weigh 450g and include a built-in battery. The Ascent is the cheapest entry point into Walksnail HD without compromising on the core experience. For pilots who already own premium analog goggles, a standalone Walksnail VRX module with HDMI output lets you add digital video to your existing setup.
What We Recommend
For micro whoops: 1S Lite Kit. It is the only option light enough, and it works.
For 3-4 inch toothpicks: Mini VTX V3. Enough power for park flying, light enough for sub-250g.
For 5-inch freestyle (budget): Avatar HD Kit V2 with Goggles X. The full system costs significantly less than a DJI O4 Pro setup.
For cinematic builds: Moonlight Kit. The 4K onboard recording means you can leave the GoPro at home.
For racing: We would still pick DJI O4 with Race Mode for the 15ms latency. Walksnail is close but not there yet for competitive racing.
FAQ
Q: Is Walksnail compatible with DJI goggles?
No. Walksnail and DJI are separate digital systems on the same 5.8GHz band. You need Walksnail goggles (Goggles X or Ascent) or a Walksnail VRX module connected to HDMI-capable goggles. See our digital FPV system comparison for the full breakdown.
Q: How does Walksnail range compare to DJI O4?
DJI O4 has stronger RF performance and longer range in our experience. Walksnail is flyable to 4-6km with the full-size 1W VTX in open air. DJI O4 typically reaches further. For most pilots flying within visual range, both systems are adequate. See our Walksnail VTX range guide for detailed numbers.
Q: Can I use Walksnail VTX units with analog cameras?
No. Each Walksnail VTX is paired with a specific digital camera. The camera and VTX are sold as kits or separately, but they only work together within the Avatar HD ecosystem.
Q: What is the difference between Avatar HD V2 and Moonlight?
The Avatar HD V2 records 1080p/60fps. The Moonlight has a larger 1/1.7-inch sensor and records 4K/60fps with better dynamic range. Moonlight is for pilots who want cinematic image quality. See our analog vs digital comparison for context on where Walksnail fits.
Q: Do the Caddx Ascent goggles work with all Walksnail VTX units?
Yes. The Ascent goggles and Goggles X both receive any Walksnail Avatar HD signal. The Ascent uses LCD panels at a lower price point; the Goggles X uses OLED at 100Hz for better image quality. Our goggle buying guide covers both options.