The Unikeys x BSUN Udon and HMX x 80 Retros FJ400 switches are both standard MX mechanical switches of the linear breed. They both feature PC top housing, standard stem shape, 2 mm pre-travel, however, they come with different bottom housing (PA66 + 30% fiberglass vs P2), stem material (Y3X vs T2), spring (22 mm single-stage nickel-plated vs 22 mm KOS single-stage extended), actuation (48 g vs 50 g), bottom-out force (55 g vs 58 g), total travel (3.60 mm vs 3.80 mm). That said, they are not too similar. Let's check out this side-by-side specs rundawn with details, availability -- and even current prices -- to figure out which one fits you the best!
The Unikeys x BSUN Udon is a linear standard MX mechanical switch with PC top housing, PA66 + 30% fiberglass bottom housing, and Y3X stem (standard shape). It features a 22 mm single-stage nickel-plated spring. The 48g actuation occurs at 2mm. The 55g bottom-out occurs at 3.60mm. Factory lubing? Yes! Designed by Unikeys. Manufactured by BSUN. | The HMX x 80 Retros FJ400 is a linear standard MX mechanical switch with PC top housing, P2 bottom housing, and T2 stem (standard shape). It features a 22 mm KOS single-stage extended spring. The 50g actuation occurs at 2mm. The 58g bottom-out occurs at 3.80mm. Factory lubing? Yes! Manufactured by HMX. |
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| Name | Unikeys x BSUN Udon | HMX x 80 Retros FJ400 |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | PC | PC |
| Bottom housing | PA66 + 30% fiberglass | P2 |
| Stem material | Y3X | T2 |
| Stem shape | standard | standard |
| Spring | 22 mm single-stage nickel-plated | 22 mm KOS single-stage extended |
| Actuation | 48 g | 50 g |
| Bottom-out | 55 g | 58 g |
| Pre-travel | 2 mm | 2 mm |
| Total travel | 3.60 mm | 3.80 mm |
| Lube | Factory lubing? Yes! Factory lubed. The upper section of stem sliders is lubed only to avoid lube pooling issues. Springs are lubed with dry film. | Factory lubing? Yes! |
| Designer | Unikeys | - |
| Manufacturer | BSUN | HMX |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the Unikeys x BSUN Udon is available at a single shop at the moment, while the HMX x 80 Retros FJ400 can be found in multiple stores.
Clicking the links below take you to some notable keyboard shops offering Unikeys x BSUN Udon and HMX x 80 Retros FJ400 switches. When accepted, the prices indicated already include the discount - use the KBDNEWS coupon code at checkout to claim your saving!
Prices, discounts, and stock status are checked regularly; however, changes since the last update cannot be ruled out. Everything here is for informational purposes only. Check the product pages for the latest prices!
Comments on Unikeys x BSUN Udon switches | Comments on HMX x 80 Retros FJ400 switches |
The Unikeys Udon linear switch is our attempt at trying to create a clacky BSUN switch that is not thin-sounding. The stem material, Y3X, is the same as the Jade Rosales switches; It can be considered an improved LY or Y3 material, and Y3X is slightly softer than LY but much smoother than both LY and Y3. We chose to pair it with a modified PA66 bottom housing to create a full but clacky-sounding bottom out. The PC top housing gives them a clean and sharp top-out sound. Overall, these will be one of the more clacky new BSUN switches in our collection. In order to prevent the lube pooling issues, we chose to only lube the stem sliders and legs with a very thin coat of 205g0. Springs are lubed with dry film – Unikeys. | The switch color scheme is inspired by the Fuji 400 film roll. Compared to traditional HMX clicky switches, this switch has a more thocky sound. It features an HMX T2 material stem, P2 material bottom housing, and a PC material top housing that dampens the sound. With a total travel of 3.8mm, the sound is quieter compared to the 3.5mm travel switches – Deskhero. |
