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APEX 4 Outdoor Watch - Black - 42mm - Image 1
APEX 4 Outdoor Watch - Black - 42mm - Image 2
APEX 4 Outdoor Watch - Black - 42mm - Image 3
APEX 4 Outdoor Watch - Black - 42mm - Image 4
APEX 4 Outdoor Watch - Black - 42mm - Image 5
APEX 4 Outdoor Watch - Black - 42mm - Image 6
APEX 4 Outdoor Watch - Black - 42mm - Image 7
APEX 4 Outdoor Watch - Black - 42mm - Image 8

APEX 4 Outdoor Watch - Black - 42mm

€462.40
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Due to high demand: only limited stock remaining in the EU warehouse

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Product description

Key Benefits

  • Dual-frequency GPS for ultra-precise navigation.
  • Up to 41 hours of battery life in GPS mode.
  • Titanium body and sapphire glass durability.
  • Zero-lag global mapping with turn-by-turn guidance.
  • Sport-specific modes for trail, climb, and ski.


Made for trail running, alpine climbing, ski touring, or any pursuit where endurance meets elevation, the COROS APEX 4 is a high-performance GPS adventure watch built for mountain athletes who want to train hard and go far, fast. Crafted from Grade 5 titanium with sapphire glass and a crystal-clear Memory-In-Pixel display, it’s engineered to perform in extreme conditions — from sun and snow to altitude and impact.

Equipped with dual-frequency satellite tracking, enhanced Vertical GPS algorithms, and a dual-range barometer, the APEX 4 delivers ultra-precise navigation in dense forests, couloirs, and alpine walls. Its next-generation processor provides zero-lag global mapping, displaying detailed topographic and landscape maps with turn-by-turn navigation and named trails.

With up to 41 hours of battery life in Endurance GPS mode (42mm version) and up to 15 days with basic daily use (including sleep, daily stress, and daily HR measurements), the APEX 4 is ready for multi-day missions. Dedicated sport modes for trail running, climbing, and ski touring, alongside advanced training, sleep, and recovery insights, give a full picture of performance.

Lightweight yet exceptionally durable, it’s precision-engineered for endurance athletes who demand accuracy, reliability, and performance in every environment.

Why COROS is Healf
COROS is a performance sports technology brand built for athletes who push limits. Inspired by the outdoors and driven by endurance, COROS designs high-grade gear tested in the world’s most extreme conditions. Every product blends advanced engineering with intuitive design to support serious training and exploration. Created by athletes, for athletes—COROS is made to perform when it matters most.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Suggested use
For full setup instructions, please follow the user manual included with the product.

GENERAL SPECIFICATIONS:

APEX 4 (42MM)

Dimensions: 42.6 x 42.6 x 15.8 mm
Body Weight: 38g
Weight with Silicone Band: 56g
Weight with Nylon Band: 45g

Battery:
Endurance GPS Mode: 41 hours
High GPS Mode: 34 hours
Max GPS Mode: 26 hours
Daily Use: 15 days (with Sleep, Daily Stress, and Daily HR Measurements)
Charging Time: About 1.5 hours (15℃ ~ 45℃ / 59°F to 113°F)

Band:
Width: 22mm
Wrist Size Compatibility: Silicone: 135–205 mm / Nylon: 135–205 mm
Connection: Quick Release

Display:
Screen Size: 1.2 inches
Resolution: 240 x 240 pixels
Screen Type: 3rd Generation Memory-in-Pixel Touch Screen

Navigation:
Map Type: Landscape Maps (with street and trail names, POIs)
Topo Maps

Other Features:
Back-to-Start
Waypoints
Turn-by-Turn
Pins

Hardware Controls:
Buttons
Digital Dial
Back Button
Action Key

Touch Screen:
Click to select and swipe to navigate

Packaging:
Material: Biodegradable and Recyclable

Data Connection:
Sync data via Bluetooth to the COROS app or directly to the COROS server via Wi-Fi

Music:
Connect to headphones via Bluetooth for music playback with 32GB of built-in storage

Satellites:
Supported Systems: GPS, GLONASS, GALILEO, BeiDou, QZSS
Dual Frequency: Supports L1 + L5

Durability:
Waterproof Rating: 5 ATM
Operating Temperature: -20℃ ~ 50°C (–4°F to 122°F)
Storage Temperature: -20℃ ~ 60°C (–4°F to 140°F)
Charging Temperature: 0℃ ~ 45℃ (32°F to 113°F)

Material:
Screen: Sapphire Glass
Bezel and Backing: Titanium Bezel and High-Strength Polymer Backing
Band Material: Nylon/Silicone

The Healf Promise

Rated 4.8 (Excellent) based on 13,000+ reviews on Trustpilot

Dillon Jagatia

A comprehensive approach to wellbeing

Healf has impressed me with its comprehensive approach to wellbeing. Their commitment to natural ingredients and cutting-edge technology is evident. From vitamins and supplements to healthy snacks and cooking essentials, they've curated a diverse range of options to cater to various health needs.

Jesse Hansen-Bartel

Top-tier products

If you're serious about wellbeing, you need Healf. Their products are top-tier and the customer service team has been super attentive!

Mayah

One of the best wellbeing websites I've come across.

Healf is one of the best wellbeing websites I've come across. It's nice to know that they thoroughly check the products they sell so you know you are getting good quality stuff. Highly recommend.

Lydia Free

The best wellbeing website…

The best health and wellbeing website in the UK. The range of products is fantastic, even on hard to reach USA products. I love the subscription service too. I'd be lost without this website.

Alex

Amazing!

Healf isn't just another wellbeing brand. They really get it. The products are fantastic, and the support is always so personal and genuine!

Janet

Great products, service, and customer support

Healf have a great range of wellbeing products not available elsewhere in the UK. They are competitively priced as one-off, but even better if you take up the 'subscription' which is super flexible too. I'd have no hesitation in recommending Healf.

S Jones

I love Healf

It's the only place I get really decent health and wellbeing brands, particularly US brands. I've bought a Pvolve set, lots of Skinny Confidential stuff, Thorne supplements etc., the really great stuff that's impossible to get otherwise.

Dillon Jagatia

A comprehensive approach to wellbeing

Healf has impressed me with its comprehensive approach to wellbeing. Their commitment to natural ingredients and cutting-edge technology is evident. From vitamins and supplements to healthy snacks and cooking essentials, they've curated a diverse range of options to cater to various health needs.

Jesse Hansen-Bartel

Top-tier products

If you're serious about wellbeing, you need Healf. Their products are top-tier and the customer service team has been super attentive!

Mayah

One of the best wellbeing websites I've come across.

Healf is one of the best wellbeing websites I've come across. It's nice to know that they thoroughly check the products they sell so you know you are getting good quality stuff. Highly recommend.

Lydia Free

The best wellbeing website…

The best health and wellbeing website in the UK. The range of products is fantastic, even on hard to reach USA products. I love the subscription service too. I'd be lost without this website.

Alex

Amazing!

Healf isn't just another wellbeing brand. They really get it. The products are fantastic, and the support is always so personal and genuine!

Janet

Great products, service, and customer support

Healf have a great range of wellbeing products not available elsewhere in the UK. They are competitively priced as one-off, but even better if you take up the 'subscription' which is super flexible too. I'd have no hesitation in recommending Healf.

S Jones

I love Healf

It's the only place I get really decent health and wellbeing brands, particularly US brands. I've bought a Pvolve set, lots of Skinny Confidential stuff, Thorne supplements etc., the really great stuff that's impossible to get otherwise.

Frequently asked questions

How do we curate our products?

Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.

Do you have resources on how to enhance wellbeing?

The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.


How can I find out more about the ingredients in a product?

We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.

Healf Curation Process™

Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.

Our approach keeps us at the forefront of wellbeing. With our global network of health professionals and AI-powered trend analysis, we curate the leading supplements, tools, and tech that pioneer the industry.

Each product at Healf is carefully examined by a panel of industry specialists—including dieticians, personal trainers, psychologists, and sleep experts—to ensure it meets our high standards for quality, efficacy, and ingredient formulations.

By collaborating with a dedicated group of customers who test and review each product, we ensure that only those truly beneficial to your wellbeing are offered here at Healf.