Coros Heart Rate Monitor Grey Jakob Edition

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Colour4

Product details

The Heart Rate Monitor Grey Jakob Edition from Coros is an innovative heart rate monitor that offers optimum comfort and precise heart rate measurements. Unlike conventional chest straps, this optical model is comfortable to wear and flexibly adjusts to arm circumferences of 18 to 32 cm. The latest multi-channel technology enables real-time measurements with surgical precision, ensuring users always receive reliable data. Comprehensive connectivity allows for up to three simultaneous connections with Bluetooth-compatible devices and apps, making it easy to integrate into existing training systems. Thanks to automatic detection when put on, the heart rate belt is ready for use straight away, so users can start their training sessions without delay. The impressive battery life of up to 38 hours with full use and 80 days in standby mode ensures that the belt won’t let you down, even during intense training sessions. Magnetic charging makes it quick and easy to use, whilst the ultra-soft material ensures a secure fit, whether you’re running or doing intense workouts.

Key specifications

Pulse belt type
Heart rate belt (with module)
Connectivity
Bluetooth
Carrying method
Around the arm
Size
One size

General information

Item number
70416844
Manufacturer
Coros
Category
Heart rate belts
Manufacturer No.
HRM-JAK
Release date
16.5.2026
Sales rank in Category Heart rate belts
39 of 108

Colour

Colour
Grey
Exact colour description
Grey

Material

Material group
Fabric, Plastic
Material
Nylon

Heart Rate Belt Features

Pulse belt type
Heart rate belt (with module)
Connectivity
Bluetooth
Carrying method
Around the arm
Size
One size

Scope of delivery

Scope of delivery
Magnetic USB charging cable

Origin

Country of origin
Taiwan

Voluntary climate contribution

CO₂ emissions
9.93 kg
Climate contribution
CHF 0.24

Package dimensions

Length
10 cm
Width
10 cm
Height
6 cm
Weight
150 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Heart rate belts» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 1.Coros
    0.6 %
  • 2.Wahoo
    0.9 %
  • 3.Garmin
    1.3 %
  • 4.Polar
    1.5 %
  • 5.Sigma Sport
    2.5 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 2.Suunto
    1 day
  • 3.Polar
    3 days
  • 3.Wahoo
    3 days
  • 5.Coros
    5 days
  • 5.Garmin
    5 days

Return rate

How often is a product of this brand in the «Heart rate belts» category returned?

Source: Digitec Galaxus
  • 1.Sigma Sport
    0.6 %
  • 2.Wahoo
    1.5 %
  • 3.Coros
    1.7 %
  • 4.Polar
    1.8 %
  • 4.Suunto
    1.8 %
Source: Digitec Galaxus

Translation: machine translated
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RoadBIKE Logo
RoadBIKESingle testReleaseAugust 2025
  • Positivereliable measurement
  • Positivehigh wearing comfort
  • Positivegood battery life
  • PositiveTwo years warranty
  • NegativeProprietary magnetic charging cable

Optical heart rate measurement systems worn on the upper arm are recommended as a convenient alternative to chest straps. The Coros model is one of these. The soft strap can be easily adjusted using the Velcro fastener, holds securely and sits comfortably. A special feature is the automatic stand-by mode: there is no on/off switch, the sensor starts measuring automatically when you put it on and deactivates...