Coros


Train Smarter Kit — Coros Edition

£419.99

Endurance-first performance tracking with battery life built to go the distance.

APEX Watch Size: 42mm
APEX Watch Colour: Black
HRM Colour: Grey

In Stock | Estimated 3-5 Days Delivery

American Express
Apple Pay
Google Pay
Klarna
Maestro
Mastercard
PayPal
Shop Pay
Visa

The Train Smarter Kit — COROS Edition is built for endurance athletes who prioritise long battery life, reliability, and distraction-free performance tracking. Combining the COROS APEX 4 GPS outdoor watch with the COROS Heart Rate Monitor, this bundle delivers accurate training data designed to support long runs, ultra-distance efforts, and multi-day adventures without constant charging or interruptions.

At the centre of the kit is the COROS APEX 4, a rugged, high-performance GPS watch engineered for endurance training. With advanced multi-band GNSS, extensive sport modes, and exceptional battery life, it tracks pace, distance, elevation, and performance metrics with consistency over long sessions. Paired with the lightweight COROS Heart Rate Monitor, you get reliable, strap-free heart rate data worn comfortably on the arm — ideal for endurance athletes who value comfort during extended training.

Together, this kit supports smarter long-term training decisions by delivering dependable data across hours and days of activity. Whether you’re building aerobic base, training for ultras, or logging high-volume weeks, the Train Smarter Kit — COROS Edition provides the confidence to train harder, recover better, and go further on a single charge.

Key Benefits

  • Endurance-focused training bundle built for long sessions and multi-day use

  • Exceptional battery life designed to reduce charging interruptions

  • Advanced multi-band GNSS tracking for accurate pace, distance and elevation

  • Comfortable arm-worn heart rate monitoring for extended training sessions

  • Lightweight, rugged GPS watch suitable for outdoor and endurance sports

  • Real-time performance metrics including pace, effort and heart rate zones

  • Seamless COROS ecosystem integration for training analysis and planning

  • Ideal for endurance athletes training for marathons, ultras and long-distance events

Product Specifications

APEX 4

  • Available sizes: 42 mm (≈ 44 g) and 46 mm (≈ 51 g) bodies.
  • Case dimensions: 42.6 × 42.6 × 15.8 mm (42 mm model)
  • Display: Memory-in-Pixel touch screen — 1.2″ (42 mm) or 1.3″ (46 mm).
  • Materials: Grade 5 titanium bezel, sapphire glass lens, reinforced lugs.
  • GPS: Dual-frequency satellite chipset with vertical GPS algorithms and global maps.
  • Battery life (GPS mode): Up to 41 hours (42 mm model) / Up to 65 hours (46 mm model) with All-Systems GPS.
  • Water resistance: Rated to 5 ATM (suitable for swimming).
  • Operating temperature: -20 °C to 50 °C.
  • Strap width: 22 mm quick-release bands compatible with silicone or nylon options.

HRM

Size and Weight

  • Dimensions: 42.5 x 28.4 x 9.1mm
  • Weight (Sensor Only): 9.7g
  • Weight (Sensor + Band): 19g

Materials

  • Band Material: Polyester fiber, nylon, spandex

Sensors

  • Optical Heart Rate Hardware: 5 LED lights with 4 photodetectors

Fit

  • Arm Size: 7.09-12.6 inches (18-32cm)
  • Wearing Position: Bicep

Connectivity

  • Wireless Connection: Bluetooth
  • Supported Devices: Bluetooth-compatible devices that receive heart rate data
  • Simultaneous Connections: Supports up to 3 devices
  • Data Sync: Real-time heart rate data

Durability

  • Water Resistance: 3 ATM
  • Working Temperature: -4°F to 122°F (-20°C to 50°C)
  • Storage Temperature: -4°F to 140°F (-20°C to 60°C)
  • Charging Temperature: 32°F to 113°F (0°C to 45°C)

Battery

  • Activity Mode: 38 hours
  • Standby Mode: 80 days
  • Battery Capacity: 55 mAh
  • Charging Time: Less than 2 hours
  • Charging Cable: USB Type-A with magnetic interface
Why We Choose Coros

We choose Coros because they design cutting-edge GPS sports watches built for athletes who push boundaries. With a focus on accuracy, battery life, and performance-driven features, Coros empowers runners, cyclists, climbers, and outdoor explorers to train smarter and go further.

  • Endurance First – Industry-leading battery life to support long training sessions and adventures.
  • 💡 Performance Insights – Advanced metrics for running, cycling, swimming, and more.
  • 🌍 Adventure-Ready – Built tough for extreme conditions, from mountain trails to open water.
  • 🏅 Athlete Approved – Trusted by elite endurance athletes and world-record holders.

That’s why Coros is part of the Norths Athlete collection — delivering the tools athletes need to reach new levels of performance and adventure.

APEX Watch Size
APEX Watch Colour: Black
HRM Colour: Grey

Shop by collection

Best Sellers

Best Sellers

Bundles

Bundles

Offers

Offers