Technical sheet

SEAC K Jack knife

Name: SEAC K Jack knife
Brand: SEAC
SKU: 136678962
Price: 25.99 EUR
Availability: InStock
Rating: 5 (12 reviews)

Price without code 25.99

RRP:

You save:

Price without subscription

VAT & duties included

12 Reviews

6 Questions

No extra charges at delivery.

Size

Long

What is my size?

My virtual fitting room

Stringing

Unstrung

Tension

18 Kg
19 Kg
20 Kg
21 Kg
22 Kg
23 Kg
24 Kg
25 Kg
26 Kg
27 Kg
28 Kg
29 Kg
30 Kg
31 Kg
32 Kg
33 Kg
34 Kg
35 Kg
36 Kg

To adjust your bindings, type in the following informations:

(Customized items cannot be returned or exchanged)

It´s free!

(Customized items cannot be returned or exchanged)

Single purchase

Add to my pack

You save:

Buy now in 1 click

Back to PC configurator

Buy this product and earn

Color:

Free shipping

dto_trans discount on shipping

Free assembly

Free removal of old appliance (only with Ader)

Your interest-free financing from with Klarna Paypal

Pay in 3, 4, 6 or up to 12 installments

My virtual fitting room

Other colors available

Perfect pairings

Reportar error

Trusted by over 25 million satisfied customers worldwide

Official brand warranty

Quick & easy 30-day return

Features of SEAC K Jack

Product description of SEAC K Jack knife

Description summary

The SEACSUB K Jack knife is an essential multi-tool for divers. Featuring a robust, corrosion-resistant stainless steel blade with both smooth and serrated edges, it´s perfect for cutting fishing line, signaling, or making minor repairs with its blunt, screwdriver-like tip. A dedicated line cutter notch ensures quick disentanglement. Its intelligent design prioritizes safety, preventing damage to BCDs, and offers versatile mounting options for immediate access. The K Jack is a reliable, indispensable companion for any underwater adventure

SEACSUB K Jack Knife: The Essential Multi-Tool for Every Diver

Discover the ultimate companion for your underwater adventures with the SEACSUB K Jack knife. Designed for the modern scuba diver, free diver, and spearfishing enthusiast, this knife transcends its basic function to become an indispensable piece of safety and utility gear. A diver’s knife is truly a tool - useful for tasks from cutting fishing line to pointing out marine life to signaling to a dive buddy by knocking on your scuba tank. The K Jack is engineered to excel in every one of these roles, providing reliability when you need it most.

The Seac K Jack knife is a well-balanced diver´s knife with a strong tempered blade that is very popular with scuba divers and free divers alike. Its intelligent design focuses on safety, versatility, and ease of access. The robust stainless steel blade is crafted for performance in demanding marine environments, resisting corrosion while maintaining a sharp, reliable edge. One of the most critical features is its thoughtful blunt tip. This design masterfully prevents accidental damage to your jacket bag (BCD) or other sensitive equipment and, in a stroke of genius, also makes it possible to use the knife as a screwdriver for minor on-the-spot adjustments or prying tasks.

Functionality is at the core of the K Jack´s design. The blade features a double-edge, smooth and serrated, and a line cutter notch. This combination ensures you are prepared for any situation, whether you need a clean, precise cut from the smooth edge or the powerful sawing action of the serrated edge for tougher materials like rope or thick monofilament. The dedicated, built-in line cutter allows for swift, one-handed severing of tangled lines, a crucial safety feature for any diver.

Accessibility is paramount in an emergency, and the K Jack delivers with its intuitive sheath and universal kit for attachment. The system allows for versatile mounting on your BCD, arm, or leg, ensuring your tool is always within reach. The sheath is designed for secure retention and a quick, one-handed "squeeze-to-release" action, allowing you to deploy the knife instantly without fumbling. This combination of secure housing and rapid access provides peace of mind on every dive. The SEACSUB K Jack isn´t just a knife; it´s a multi-purpose tool engineered for the realities of diving.
---

Technical Specifications:

* Attributes: Knives, Spear Fishing
* Blade Edge: Double-edge with both a smooth and a serrated side.
* Tip Design: Blunt tip for safety and utility as a screwdriver.
* Special Features: Integrated line cutter notch for quick severing of lines

Specifications

Manual

Technical specifications of SEAC K Jack

Features of SEAC K Jack

Color Black

Color

Black

Silver

Recommended Use Spear Fishing

Recommended Use

Spear Fishing

Product Type Knives

Product Type

Knives

Key differentiators

Durable, corrosion-resistant tempered stainless steel blade

Fixed locking mechanism for enhanced safety and reliability during use

Multi-functional design with a blunt tip that doubles as a screwdriver

Secure and convenient hose mount for easy access

Versatile cutting edge with smooth, serrated, and line-cutter sections

Technology in SEAC K Jack knife

Energy rating

Warnings

4.92 / 5

12 Reviews

What our customers are saying about SEAC K Jack knife

Discover a compact, lightweight dive knife designed for performance. Its excellent grip ensures control, and the sharp blade handles tasks efficiently. Integrated accessories allow easy attachment to gear. This small scuba knife offers outstanding value and quality construction. Experience a firm, secure holder and a durable design that resists minor oxidation with basic care, making it a smart purchase for any diver seeking a reliable, budget-friendly tool

Knife

2026/02/03

Diego

This small, lightweight knife has a good grip and a blade that performs well when needed. It can be attached to a jacket or sleeve thanks to the included accessories. Excellent value for money.

Small and handy

2024/11/10

Alberto

Fast delivery, fair price, good product

Good knife

2022/10/13

Alex

Compact and with a good grip, cut more than enough. With use, even letting it dry out of the sheath, it oxidizes a bit in the area of the blade attached to the hilt. With passing a brush every 4/5 dives, it is perfect. Excellent quality/price ratio.

Diving equipment knife

2022/06/23

David

It is perfect because of its size, it can be attached to your equipment without a problem,..... It does not seem expensive to me and of good quality.... For me it is a purchase, you say if you are looking for something small and useful and you do not want to spend too much... ..

Compact

2022/03/15

Aurimas

Compact and nice. Good price, nice grip, firm holder.

Good

2021/10/09

Rob

Very good value small Knife

Review

2021/03/20

Makdiver

Really good small knife for the price .. Good grip and very good holder.

Knife seac

2021/02/27

Jan

The Seac knife fits perfectly on my BCD, is well secured and the knife itself is also of excellent quality, is firmly in the holder, super fast delivery to Belgium

Knife

2020/08/31

Vasko

Very good knife!

Good

2020/06/24

Denis

Not expensive and good quality

Great small tool

2019/09/14

István

The SEAC K Jack is great, small scuba knife. Small in size but knows everything, what you needs... Perfect fit to my Aqualung Axiom jacket's attachment points.

Knife for diving equipment

2018/09/06

José Antonio López Argandoña

Good knife. Good hooking to install in the hose of the diving equipment.

Write your review

Write a review about this product

Review headline

First Name

E-mail

Product rating

Write your review

0 / 1000

The text cannot exceed 1.000 characters.

Your review is too brief! To validate it and receive your CoINNs, please add more details about your experience with the product.

Incorrect please try again You’ve exceeded the allowed number of comments per product for earning CoINNs. Thank you for leaving your feedback!

I have read and accept the conditions contained in the Privacy Policy on processing of my data to manage my query or request

Your feedback is important to us, your review about this product will be revised by our experts and will be published within 5 working days. Please make sure that your review focus on the product and your experience with it, this will help other customers make more confident decisions. For any issues with an order, please contact us.

Tradeinn Retail Services as the data controller will process your data in order to respond to your query or request. You can access, rectify and delete your data, as well as exercise other rights by consulting the additional and detailed information on data protection in our Privacy Policy.

Send

Answer the question

Write your answer

Write your review

0 / 1000

The text cannot exceed 1.000 characters.

Thank you for answering the question and helping other customers, your CoINNs will be credited to your account once the answer is published. You can see the number of CoINNs accumulated on your account. Incorrect please try again

Send

The question has already been answered, thank you very much for trying to help another customer. We will count on you for future questions.

Include AI Generated questions and answers

2026-09-14

Generated by AI and verified

Is the Seac K Jack Knife Silver a good investment for divers?