HMX FJ400 vs. Jerrzi Seashell
An in-depth look at the HMX FJ400 and the Jerrzi Seashell switches—which one is the best fit for you?
Overview
When considering mechanical keyboard switches, the HMX FJ400 and the Jerrzi Seashell both offer unique attributes that cater to different user preferences. The FJ400, a middle ground option in the HMX Film switch lineup, provides a balanced sound profile that many typists appreciate for its versatile performance, making it a solid choice for both gaming and typing contexts. On the other hand, the Jerrzi Seashell dazzles with its striking purple hue, not only appealing visually but also providing a light and clacky feel that offers a delightful typing experience. For those who value aesthetics along with functionality, the Seashell might take the lead, while the FJ400's balanced profile can be perfectly suited for those who prefer a more neutral experience. However, let's dive in a bit deeper beyond generalities so you can best decide on the best switch for you.
By the numbers
Technical specifications
Actuation force
50g
Actuation force
45g
Bottom-out force
58g
Bottom-out force
N/A
Pre-travel
2.00 mm
Pre-travel
1.20 mm
Total travel
3.80 mm
Total travel
3.40 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Partial box
Stem material
T2
Stem material
POM
Top housing material
POM
Top housing material
Polycarbonate
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
Stainless steel
Housing materials
The HMX FJ400 and the Jerrzi Seashell utilize different materials for their top housings that significantly influence their sound profiles. The FJ400 features a POM (Polyoxymethylene) top housing, known for creating an incredibly pleasing and unique sound. This material tends to produce a deeper and relatively muted audio experience. In contrast, the Seashell employs a polycarbonate top housing, characterized by its sharper, higher-pitched, and crisper sound profile. The stiffness of polycarbonate allows for a clearer and more resonant output. While both switches use nylon for their bottom housings, the distinction in top housing materials leads to different auditory characteristics when typing, showcasing how the materials interact with sound dynamics.
Both switches share the nylon bottom housing, which is a classic choice in the mechanical keyboard community. This material is known for its ability to produce a deeper and fuller sound profile due to its relatively soft composition, which absorbs sound more effectively than harder plastics. As a result, both switches will generate a more rounded sound when bottoming out keys. The intimate sound experience in both switch types underscores the importance of the bottom housing, emphasizing how nylon contributes to the overall acoustic signature, regardless of the top housing material. Users can expect a similar bottom-out sound despite the differences in the top housing.
In terms of their combined effects, the variations in top housing materials of the FJ400 and the Seashell create a distinctive auditory experience, but the similarities in their nylon bottom housings provide a common foundation. When a key is pressed, the nylon bottom housing imparts a consistent, fuller sound that resonates in either case. However, the expression of this sound is altered by the different top materials' contributions. In practice, users may find that while typing, the FJ400 will yield a more subdued experience compared to the brighter tones of the Seashell, allowing for a sophisticated variety of auditory feedback in their typing experience while maintaining a shared essence through the nylon bottom.
Weight
When comparing the HMX FJ400 linear switch and the Jerrzi Seashell linear switch, there are notable differences in their actuation force. The FJ400 has an actuation force of 50 grams, which provides a moderate resistance when typing, making it a balanced choice for both long periods of use and gaming sessions. In contrast, the Seashell features a lighter actuation force of 45 grams, appealing to users who prefer a less strenuous typing experience. However, while the FJ400 has a bottom out force of 58 grams, the bottom out force for the Seashell is unknown, leaving some uncertainty about the overall feel when pressing down all the way. As it stands, the FJ400 is the heavier switch, making it a suitable option for those who enjoy a more pronounced tactile experience, whereas the lighter Seashell may cater to users looking for a softer touch. Ultimately, the choice between these switches will depend on personal preference regarding typing force and comfort during extended use.
Travel distance
The HMX FJ400 linear switch features a travel distance of 3.8 mm, while the Jerrzi Seashell linear switch offers a slightly shorter travel distance of 3.4 mm. This difference indicates that the FJ400 provides a deeper keystroke, which can be preferred by those who enjoy a more substantial typing experience. In contrast, the Seashell's shorter travel distance aligns with the trend of gamers seeking quicker response times, making it an attractive option for those valuing speed and efficiency. Overall, if you prefer a more pronounced keystroke, the FJ400 is the better choice, while the Seashell could be ideal for users who prioritize responsiveness over depth.
Price comparison
Which switch is more bang for your buck?
The HMX FJ400 has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the FJ400 for $3.29.
The Jerrzi Seashell has an MSRP of $2.79 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Seashell for $2.30.
Here at Milktooth, we offer the best prices on switches (on average, 27% lower the competition). In addition, we offer free shipping on orders over $49.00. We also offer free returns and exchanges, so you can shop with guaranteed satisfaction.
That said, while price is an important piece of the puzzle, our opinion is that you should ultimately pick the option that most suits your unique preferences since you’ll be using these switches for years to come. In other words, finding something perfect for you is, in our view, the most important criteria.
Typing experience
When it comes to sound, the HMX FJ400 linear switch offers a balanced and pleasant auditory experience that tends to sit comfortably in the middle of the spectrum, providing a satisfying typing sound without overwhelming noise. In contrast, the Jerrzi Seashell linear switch is known for its clacky nature, generating a sharp and bright sound profile that is both crisp and percussive. While both switches provide an enjoyable auditory experience, the Seashell's high-pitched clack adds a more dynamic character to the soundscape, making it a preferable choice for users who appreciate a livelier typing sound. Ultimately, experiencing sound varies with board and keycaps, but generally, users may find the FJ400 to be more subdued compared to the striking auditory highlights of the Seashell.
In terms of feel, the FJ400 emphasizes a smooth typing experience, although specific details on its tactile feedback are not provided. On the other hand, the Seashell switches excel in feel with their feathery action, requiring minimal exertion to activate. This ease of pressing significantly reduces finger fatigue, making them exceptionally comfortable for prolonged typing sessions. The added descriptors of being polished and easy-to-press indicate that the Seashell switches not only feel smooth but are designed to enhance the overall typing experience through a responsive and low-impact approach. Consequently, if one favors lightweight and effortless key presses, the Seashell is a standout option.
In summary, both the HMX FJ400 and Jerrzi Seashell linear switches present unique auditory and tactile characteristics catering to different preferences. While the FJ400 provides a more balanced sound, the Seashell offers a brighter, clacky auditory profile. On the tactile front, the Seashell stands out with its lighter actuation force and polished feel. Ultimately, keyboard enthusiasts seeking similar comfort and enjoyment during extended typing sessions could find satisfaction in either switch, but those with specific preferences in sound or feel may lean toward one option based on these subjective qualities.
Conclusion
To sum up, choosing between the HMX FJ400 and the Jerrzi Seashell linear switch ultimately depends on your typing preferences and style of usage. If you’re looking for a balanced sound profile and a medium actuation force of 58 grams, the FJ400 is a fantastic option. It is ideal for users who prefer a more traditional feel, providing a solid typing experience without overwhelming finger fatigue, making it suitable for both work and casual use. On the other hand, if you prioritize aesthetic appeal along with a light and clacky sound, the Seashell’s captivating purple hue and exceptionally easy-to-press design could be what you need. With its feathery feel, low effort required for activation, and high-pitched clack, it’s perfect for long typing sessions or gaming marathons where comfort and responsiveness are paramount. In conclusion, assess what qualities you value most in your typing experience—whether it be sound, feel, or aesthetics—to make the best choice between these two outstanding switches.
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