CooSpo H9Z heart rate monitor chest strap

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Product guide

CooSpo H9Z heart rate monitor chest strap

The CooSpo H9Z heart rate monitor is a rechargeable chest-strap sensor with Bluetooth 5.0 and ANT+ connectivity. It is aimed at people who want heart-rate data for compatible phones, bike computers, watches and training apps, though customer feedback is mixed on accuracy, reliability and charging.

At a glance

Uses Bluetooth 5.0 Low Energy and ANT+ to connect with supported devices and training apps.
A five-colour LED indicates heart-rate zones, and the listing also claims HRV support.
The fabric chest strap is adjustable across a stated 25–36 inch range.
Manufacturer claims up to 50 hours of use per charge.

Price

£33.15Save 34%

Reference price: ~~£49.99~~

Price checked: 14 Nov 2026

View offer

Often bought together

COOSPO Bike Cadence Speed Sensor BK467, Bluetooth ANT+ Cadence Sensor for GPS Bike Computers, Tracking Cycling Speed and Distance RPM, Compatible with Zwift Wahoo Peloton Openrider Rouvy APP

£13.53

Pros and cons

Pros

Bluetooth and ANT+ support gives it options for pairing with compatible phones, bike computers and gym equipment.
Rechargeable battery avoids routine battery replacement, according to the listing.
An adjustable fabric strap and colour-coded heart-rate zones provide practical training features.

Cons

Chest-strap wear may not suit buyers looking for a wrist-worn or non-chest sensor.
Customer feedback describes mixed accuracy and reliability, so it may be a poor fit when dependable readings are essential.

Technical specifications

12 specifications

Identity
Brand	CooSpo
Model	H9Z

Display and video
Screen size	0.96 Inches

Power and battery
Battery life listed	8760 Hours
Battery type	Lithium-Ion

Dimensions and installation
Weight listed	55 Grams
Strap adjustment range	Strap adjustment range:25-36 inches

Sensor and compatibility
Sensor type	PPG
Compatible devices	IOS & Android devices, bike computers

Connectivity and functions
Other wireless connection	ANT+
Heart-rate zone indicator	5-color led light
Heart rate variability	HRV

What to know before buying

Listing details to confirm

The listing gives conflicting battery-life figures: 8760 Hours in its specifications and up to 50 hours per charge in the feature text. Treat the runtime as unconfirmed and check the selected listing. The claimed ±1bpm accuracy is a manufacturer claim, not an independent measurement.

What’s in the box

Included

CooSpo H9Z heart rate monitor
Soft chest strap
User manual

Who is it for?

A good fit for

Cyclists and indoor-training users who want heart-rate data sent to compatible bike computers, gym equipment or apps.
Buyers seeking a rechargeable chest strap with both Bluetooth and ANT+ connections.
Training users who may find heart-rate zone lights and HRV support useful, subject to compatible equipment or apps.

Less suited to

Anyone who needs confirmed long battery runtime or consistently reliable readings based on the available customer feedback.
Buyers who prefer a wrist-based monitor or do not want to wear a chest strap.

CooSpo H9Z heart rate monitor chest strap · photo 2 — Additional product photo 2

Customer reviews on Amazon

3.2 / 5 · 778 ratings

5 stars38%38%
4 stars15%15%
3 stars6%6%
2 stars9%9%
1 star32%32%

Customer feedback highlights easy connections with watches, Zwift trainers and cycling apps, but reports are mixed on reliability, accuracy and battery performance. Some customers describe interruptions or inaccurate readings, while others praise battery life. For workouts where readings need to be dependable, that uncertainty matters more than the listing’s claimed accuracy. Opinions on value are also divided.

Positive themes

Customers report that it connects easily to some watches, Zwift trainers and cycling apps.

Negative themes

Some customers report that the monitor stopped working during workouts, produced inaccurate readings or had charging problems.

Mixed feedback

Battery-life and value-for-money experiences are divided.

Frequently asked questions

Which devices can the CooSpo H9Z connect to?

The listing specifies iOS and Android devices and bike computers. It also claims Bluetooth and ANT+ compatibility with various watches, gym equipment and training apps, but check compatibility with your particular device and app.

How long does the battery last?

The feature text claims up to 50 hours on a charge, while the specification table lists 8760 Hours. These figures conflict, so the actual runtime is unconfirmed.

What chest size does the strap fit?

The stated strap adjustment range is 25–36 inches.

Does the H9Z support heart-rate variability?

The listing claims HRV support. Check whether your chosen receiving device or app supports the function.