CooSpo BK9S Bluetooth and ANT+ Speed Sensor

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Product guide

CooSpo BK9S Bluetooth and ANT+ Speed Sensor

The CooSpo BK9S speed sensor sends cycling speed data to compatible apps, bike computers and GPS watches over Bluetooth or ANT+. The listing claims up to 300 hours of battery life and an IP67 rating, but its title also describes cadence sensing, which conflicts with the listed single speed sensor.

At a glance

Uses Bluetooth 5.0 and ANT+ to connect with cycling apps, trainers, bike computers and GPS watches, according to the listing.
The feature text claims 300 hours of operation with a replaceable CR2032 battery.
The listing claims IP67 protection and names Rouvy, Zwift, Peloton and Wahoo as compatible apps.

Price

£16.00Save 30%

Reference price: ~~£22.71~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Dual Bluetooth and ANT+ connectivity gives buyers a choice of supported connection protocol.
The stated 300-hour battery life and replaceable CR2032 could reduce battery-change frequency, if the listing claim applies to the selected unit.
The manufacturer claims an IP67 rating for outdoor cycling use.

Technical specifications

11 specifications

Identity
Brand	CooSpo
Model	690f8147-a8c1-4e97-9086-a80ccc607a28
Colour	Black

Display and video
Screen technology listed	LCD

Connectivity and controls
Wireless connection listed	ANT+, Bluetooth
Human interface input	Buttons

Power and battery
Battery life listed	300 Hours
Battery type	Lithium Ion

Protection and installation
Water-resistance rating listed	IP67
Mounting type listed	Handlebar Mount

Sensor
Sensor type listed	Speed Sensor

What to know before buying

Listing details to confirm

The listing is inconsistent about the sensor: the title calls it both a cadence and speed sensor, but the details and included-components entry specify one speed sensor, while feature text identifies the BK9S speed sensor. It also lists 300 Hours of battery life, but the title claims 350H. Confirm the selected model and battery-life claim before buying. The listed Lithium Ion battery type also differs from the feature text's replaceable CR2032 description.

What’s in the box

Included

1 speed sensor

Who is it for?

A good fit for

Cyclists who want a wireless speed sensor to send data to a compatible bike computer or cycling app.
Riders whose devices support Bluetooth or ANT+ and who want to use a named app such as Zwift or Rouvy.

Less suited to

Buyers specifically seeking cadence measurement unless the seller confirms that the selected unit supports it.
Riders needing a complete bike computer or display. The listing describes a sensor, not a computer.

CooSpo BK9S Bluetooth and ANT+ Speed Sensor · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 159 ratings

5 stars69%69%
4 stars15%15%
3 stars6%6%
2 stars3%3%
1 star7%7%

Customer feedback describes the cycling computer as working well and being easy to connect, with positive mentions of functionality and connectivity. This is encouraging for buyers pairing a cycling device, though the feedback summary refers to a cycling computer and does not establish how the BK9S sensor performs or resolve the listing’s conflicting sensor and battery details.

Positive themes

Customers describe the cycling computer as working well.
Customers report that it is easy to connect.

Frequently asked questions

Does this sensor measure speed or cadence?

The listing title mentions both, but its details and included-components entry identify one speed sensor. The feature description also refers to the BK9S as a speed sensor, so confirm cadence support with the seller if it matters.

Which connection types does it use?

The listing specifies ANT+ and Bluetooth, and claims compatibility with cycling apps, trainers, bike computers and GPS watches.

What battery life is claimed?

The product details and feature text say 300 Hours. The title instead claims 350H, so the stated battery life is inconsistent.

Is the battery a CR2032?

The feature text says the sensor uses a replaceable CR2032, but the details list the battery type as Lithium Ion. Confirm the battery supplied with the selected unit.