SKU: 25886578559

ACR ResQLink 400

Sale price$184.47 Regular price$204.97
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

ACR ResQLink 400ResQLink 400 Small but resilient, the ResQLink 400 has been professionally engineered and tested to ensure it can withstand even the harshest elements. This buoyant Personal Locator Beacon (PLB) requires no subscription for use and includes a digital display providing live status and GPS coordinates. Whether on land, at sea, or in the air, trust that the ResQLinks satellite precision and military durability, puts rescue in the palm of your hands. With

ResQLink 400 

Small but resilient, the ResQLink 400 has been professionally engineered and tested to ensure it can withstand even the harshest elements.  This buoyant Personal Locator Beacon (PLB) requires no subscription for use and includes a digital display providing live status and GPS coordinates.  Whether on land, at sea, or in the air, trust that the ResQLink’s satellite precision and military durability, puts rescue in the palm of your hands.

With three levels of integrated signal technology – GPS positioning, a powerful 406 MHz signal, and 121.5 MHz homing capability – the ResQLink 400 quickly and accurately relays your position to a worldwide network of search and rescue satellites.  Additionally, a built-in strobe and infrared strobe facilitate nighttime, or other low visibility, rescues. 

Wherever your adventure takes you, whether it’s a trip to the highest mountain peaks, the most undiscovered terrain, or the vastest of oceans, rest assured that the ResQLink 400 always activates easily.  Simply deploy the antenna, press the on button, and the beacon will do the rest for you by effortlessly guiding rescuers to within 100 meters or less of your position.  

Due to innovative design elements, multifunction clips can be used in conjunction with the beacon, providing numerous wearability options that address a variety of usage applications.  The increased ease of incorporating the ResQLink on your person, or with your gear, just made all your adventures not just safer, but more convenient too.  

*No Subscription Required 

Features:

  • GPS | Galileo GNSS
  • Built-In Buoyancy
  • Strobe and Infrared Strobe
  • Global Coverage
  • MEOSAR Compatible
  • Small and lightweight
  • 5 year battery life

Technical Specifications:

  • Dimensions (L x W x D) - 4.52" x 2.03" x 1.49" (11.48 x 5.16 x 3.78cm)
  • Weight - .33lbs (148g)
  • Battery - Non-hazmat Lithium (included)
  • Battery Replacement - Five years or after emergency use
  • GPS - Multi-constellation receiver (GPS & Galileo GNSS) 
  • Buoyant - Yes
  • Operation Life - ≥ 24 Hours
  • Activation - Manual

In the Box:

  • ResQLink 400 
  • Multifunction Clip System
  • Instruction Manual

 *Sold as an Individual 

WARNING: This product can expose you to chemicals including BISPHENOL A (BPA) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Specifications:

  • Operational Life (Hours): 24+ Hours
  • Frequency: 406 MHz & 121.5 MHz
  • Floats: Yes
  • Category: 2
  • Built-In Strobe: Yes
  • Battery Replacement (Years): 5 Years
  • Activation Method: Manual
  • Box Dimensions: 3"H x 5"W x 5"L WT: 0.65 lbs
  • UPC: 791659029213

Quick Guide (pdf)
Owner's Manual (pdf)
Brochure (pdf)
Shipping Notes
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Exchange/Return Notes
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SKU: 25886578559

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4.1 ★★★★★
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Product Reviews
C
Christopher West
Natrona Heights, US
★★★★★ 5
Great book! Practical and for developers that already use AI!
Format: Paperback
I purchased "Agentic Coding" by Claude Code due to my desire for an alternative to generic "Prompt Template" type resources related to AI-based development. This book accomplishes just that. As opposed to merely viewing Claude Code as a "magic box", the author has explained how to utilize it in conjunction with other actual development processes. The authors' emphasis on "context engineering" (i.e., structuring data/information; managing knowledge in a project; guiding an AI agent to produce consistent results vs. producing random/unknown results) represents the strongest component of the book. It should be noted that the book appears to be intended primarily for experienced developers with prior experience in software development and/or familiarity with AI-based development tools. Should you be familiar with Git, the command-line interface, and/or modern development processes, you may find this resource very helpful. Conversely, I did appreciate the fact that there were no novice-oriented descriptions provided throughout the book. The aspect of the book that I found most valuable, however, is the extremely pragmatic nature of the material contained within. The examples illustrated through developing/maintaining CLAUDE.md files; utilizing Claude Code in combination with GitHub Workflows; employing MCP Servers; and creating multi-agent or sub-agent workflows all seemed to reflect a clear focus on "real world usage" rather than theoretical constructs. In addition, each chapter builds upon previous chapters in such a manner as to provide a logical progression through which the reader can easily understand and ultimately implement the concepts learned. I also appreciated that the author included guidance on responsible utilization of the tool(s), as well as maintaining control over what changes are made by the agent. While numerous books regarding AI focus solely on what AI tools can accomplish, this book addresses both how to utilize these tools effectively in a real codebase, as well as responsibility and safety considerations. In summary, this is not a book for individuals completely inexperienced in either programming or generative AI. However, if you are currently experimenting with tools such as Claude, Cursor, GitHub Actions, or MCP, this is likely one of the more useful and practical books available on the subject. Recommended for software engineers seeking to transition from simply "prompting an AI" into establishing a repeatable/professional workflow process surrounding agentic coding.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
P
Paul Pollock
Waukegan, US
★★★★★ 4
⭐⭐⭐⭐ (so far)
Format: Paperback
I'm maybe a third of the way through this and already rethinking how I talk to coding agents. The reframe from "prompt engineering" to "context engineering" sounds like semantics until Marco walks you through why context poisoning, context clash, the Goldilocks zone for system prompts. That chapter alone reorganized something in my head. I keep going back to the line about garbage in, garbage out being the real reason agentic systems underperform. The hands-on stuff lands well too. Building the HookHub project from scratch, wiring up Playwright MCP, watching Claude generate a CLAUDE.md file and then not automatically loading a memory file you just created — that moment where you expect magic and get silence instead? That's the kind of honest teaching I appreciate. It made the "why" behind memory hierarchies click.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
J
Jonathan Reeves
Chelsea, US
★★★★★ 5
Essential Reading for Developers Serious About Agentic AI Workflows with Claude Code
Format: Paperback
Agentic Coding with Claude Code is easily one of the most practical and forward-thinking AI development books I’ve read. Instead of treating Claude Code like a simple chatbot, this book shows how to turn it into a true agentic development platform capable of handling real-world engineering workflows. What I appreciated most was how actionable the content is. The explanations around slash commands, hooks, persistent memory files, and MCP servers are incredibly clear and immediately useful. The author does an excellent job balancing foundational concepts with hands-on implementation, making advanced topics like multi-agent orchestration and hierarchical delegation approachable for experienced developers. The chapters on MCP and context engineering were especially valuable. Most AI books stay at the surface level, but this one dives deep into structured context sharing, workflow automation, and scalable AI-assisted development practices that actually matter in production environments. I also liked that the book focuses heavily on maintainability and control. It doesn’t just show flashy demos—it teaches how to safely integrate AI agents into existing terminal and IDE workflows while enforcing coding standards and keeping projects organized. The examples using Claude Code with Next.js projects were practical and helped connect the concepts to real software engineering scenarios. The sections on subagents, planning workflows, and reusable automation patterns opened my eyes to entirely new ways of approaching AI pair programming and development productivity. If you are a developer, AI engineer, or technical lead looking to move beyond basic prompt engineering and build reliable, scalable AI-assisted workflows, this book is absolutely worth reading. Highly recommended for anyone serious about modern agentic coding and AI-powered software development.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
K
Kirk D. Borne
Lexington, US
★★★★★ 5
Agentic Coding - all the right pieces in the right places
Format: Paperback
Before obtaining a copy of this book, I had not yet become familiar with Claude Code and didn't realize how robust AI Pair Programming is now. However, I did know and have rigorously promoted the absolute importance of Context (via Context Engineering) in any AI-prompted tasks, including coding. This book brings all of that together in an incredibly useful book (dare I say... a comprehensive toolkit and handbook) for AI-prompted coding in these multiple modalities: IDE, command-line, and pair programming. It covers memory management, agents, subagents, multiple-agent systems, context-sharing, orchestration, enforcement of coding standards, code maintenance, and more - for executing AI-assisted development with confidence. I highly recommend this book. Disclosure: the publisher provided me with a free review copy of the book.
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Reviewed in the United States on May 19, 2026
C
Verified Purchase
CATRINA S
New York, US
★★★★★ 5
Perfect size for me
Color: Light Color Series, Style: Waffle Pattern, Color: Light Color Series, Style: Waffle Pattern
Washed the cloths before use with just detergent. Pretty much stayed it shape and fluffy texture. It lathers well with any soap and drys fast. Love the texture size more than the exfoliating size. Texture side is great for sensitive face cleaning. The exfoliating side did soften after repeated use. I feel it is still little to rough for the face, but great for the body. 
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 18, 2025

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