Why do i need a speed sensor with a gps equipped polar head unit ? surely the head unit can calculate my speed using gps ?

Yes. Any GPS enabled Polar wrist unit will measure speed and distance for both running and cycling

Can you use this with a turbo trainer along side polar beat/flow as i dont think its compatible with m600?

Yes, I have the speed and cadence on the rear wheel and use with my Taxc turbo. Pairing it with Polar Beat will also work

can these be paired to a m450 at the same time as a H7 HR monitor

Hi. I have paired them to polar v800 together with H7. All three devices (Cadence, speed and heart sensors working together with watches). They should work the same way with m450.

Can this be fitted to oversize carbon spokes?

it probably could... it's just the magnet that attaches to the spokes so you could probably tape or cable tie it on... the only issue is that I've yet to find an app that it works with on my Nexus 5. Any that supposedly support these sensors specify that they require ANT+ hardware.

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Polar 91053157 Speed/Cadence Sensor (Combo Set) Bluetooth Smart, Black, S, 91053157

Product ID: 48093060

Details

Brand
Polar
Colour
Black
Connectivity technology
Bluetooth
Item weight
0.09 Kilograms
Sensor type
Speed Sensor

📶Bluetooth Smart connectivity

⚖️Ultra-lightweight 0.09 kg design

🚴‍♂️Accurate speed & cadence tracking

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Description

🚴‍♀️ Ride smarter, train harder, and never miss a beat!

FEATHERLIGHT SECURE FIT - Compact, lightweight design with firm bike attachment ensures no distractions on your ride.
INTERFERENCE FREE PERFORMANCE - Reliable data transmission means no dropped signals or inaccurate readings during intense training.
SEAMLESS BLUETOOTH SMART SYNC - Effortlessly pairs with your favorite fitness apps and heart rate monitors for real-time data.
COMPREHENSIVE TRAINING INSIGHTS - Sync with Polar Flow and dozens of leading apps to analyze and elevate your cycling performance.
PRECISION SPEED CADENCE METRICS - Track your current, average, and max speeds plus pedal cadence to optimize every ride.

The Polar 91053157 Speed/Cadence Sensor Combo Set is a Bluetooth Smart-enabled cycling accessory that wirelessly measures your speed and pedaling cadence with precision. Weighing just 0.09 kg, it attaches securely to your bike and pairs seamlessly with popular fitness apps and heart rate monitors, delivering interference-free data to help you analyze and improve your cycling performance.

Specifications

ASIN	B00PW9RKZC
Best Sellers Rank	197,252 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 146 in Speedometers
Brand Name	Polar
Colour	Black
Connectivity Technology	Bluetooth
Country Of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (939)
Global Trade Identification Number	00725882004792, 00725882017907
Human Interface Input	Touchscreen
Included Components	Sensor
Item Type Name	Speed and Cadence Sensor Bluetooth Smart Set
Item Weight	0.09 Kilograms
Manufacturer	Polar
Manufacturer Part Number	91053157
Model Number	91047327
Mounting Type	wheel assembly
Number of Items	1
Sensor Type	Speed Sensor
UPC	725882017907 725882004792

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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B/.234

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Panama.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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