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Introduction Video

F4 Echo

Name: F4 Echo
Brand: Tekto Knives
SKU: F4R_T6GRD_S35BK5_A1
Price: 199.99 USD
Availability: InStock
Rating: 4.9 (30 reviews)

Rated 4.9 out of 5

Based on 30 reviews

$199.99

Rated 4.9 out of 5

Based on 30 reviews

Meet the F4 Echo, a manual flipper created in collaboration with Zastava. It is designed for control and feel: the blade opens with intent and closes just as deliberately, so every movement feels confident in hand. A titanium-coated S35VN reverse tanto blade, a 6061-T6 aluminum handle with G10 inlays, and a solid button lock deliver real-world performance for everyday carry, with design details drawn from Zastava's heritage.

Color

Add Custom Blade Engraving ($9.99)

Estimated delivery: Thursday, 2 November 2026

specifications

Handle Material: Aluminum & G10

Blade Material: Titanium-Coated S35VN

Blade Hardness: 60-62 HRC

Blade Style: Fine Edge Reverse Tanto

Locking: Button Lock

measurements

Blade Length: 3.40" (86mm)

Handle Length: 4.35" (110mm)

Open Length: 7.75" (197mm)

Handle Width: 0.5" (13mm)

Weight: 2.64oz (75g)

equipped with

Ambidextrous Pocket Clip
Lanyard Hole
Tekto Pouch

G10 Inlays

Three G10 inlay options, Serbian Red, American Walnut, and Black, add grip, contrast and character. The colorways draw on Zastava's heritage without sacrificing strength.

S35VN Blade Steel

S35VN holds its edge and resists corrosion through sustained use. We choose it for reliability and consistency: it is a steel for people who carry daily and expect performance to last.

Smooth Button Lock

The button-lock system delivers clean, controlled action with solid lockup and confident disengagement. Every movement is deliberate, allowing the knife to respond only when you’re ready.

PEOPLE ARE ASKING

What is a Button Lock?

A button lock holds the blade securely open or closed until you press the button. On the F4 Echo, pressing the button releases the lock so you can open or close the blade by hand. It is a manual flipper, with no spring to open the blade.

Are Button Lock knives safe?

A button lock is usually considered better and stronger than a liner lock. Additionally, it does score extra safety points for never requiring you to put your hand in the blade’s path as it closes.

Why Do You Add Titanium Coating?

Our titanium coating process increases the corrosion resistance of our blades while at the same time providing the blade with a deep matte texture.

Does the blade arrive sharpened?

Yes, all TEKTO knives are sharpened before they leave our facilities. However, all blades lose their edge after prolonged use and must be eventually resharpened.

CUSTOMER REVIEWS

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average rating 4.9 out of 5

Based on 30 reviews

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30 Reviews

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Reviewed by Noah H.

Review posted

I recommend this product

Rated 5 out of 5

My favorite folder by TEKTO

I own the Bravo and the Charlie, both are great knives. But this knife is by far my favorite. Its compact and super smooth, smoother than the Charlie in my opinion, maybe due to the lighter weight. The button lock makes this knife fidgety, I keep opening and closing it all day long. The reverse tano is unique as most of the Tekto knives are drop points. I've used the knife for about 4 weeks and Ive cut rope, opened boxes and chopped a few branches, no issues, it did it well. Its still sharp, I haven't had to sharpen it. I received this knife free in return for an honest review.

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Reviewed by Antonio Y.

Verified Buyer

Review posted

I recommend this product

Rated 5 out of 5

Awesome knife!

Great knife, great color. It has a smooth action and the push button lock is very fidgety. This is like my 5th Tekto. You guys keep knocking it out of the park. Thank you!

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Reviewed by Steve D.

Verified Buyer

Review posted

I recommend this product

Rated 5 out of 5

Solid

Smaller that I thought it would be but any bigger and it wouldn’t be as good on a carry. Solid construction. Light weight

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Reviewed by Michael E.

Verified Buyer

Review posted

I recommend this product

Rated 5 out of 5

Best knife ever

Love this knife , my favorite of all my Tekto knives

Actually of all my knives

Super smooth opening and love the release button

Thank you

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Reviewed by jason b.

Verified Buyer

Review posted

I recommend this product

Rated 5 out of 5

F4

This is an awesome knife. I never had tekto knife. Was looking into different knives and this company stood out. Glad I took the chance and will be buying more!

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