£49.15

Sigma SIGMA Sport Unisex_Adult Zubehör R1 Ant+ Herzfrequenz Sender Accessories, Black, standard size

Black, 20504

Price data last checked 120 day(s) ago - refreshing...

View at Amazon

We'll watch every seller, every day. One email when your price arrives.

This is the most expensive it has ever been. Walk away.

£49 today · previous high £49 · all-time low £29

NEW HERE?

Amazon shows you one price. We show you all of them.

Tosheroon watches Amazon prices so you don't have to. Every product on Amazon has a price history — we make it visible. Set the price you'd actually pay, and we'll email you the second it gets there. No app, no account, one email.

WHAT'S ON THIS PAGE

↓ Price chart
when this has been cheap or pricey
↓ Forecast
where the price is heading next
↓ Statistics
all-time high & low, recent range
↑ Price alert
name your number, we'll email you

Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 611 days • 611 data points (No recent data available)

Historical
Generating forecast...
£49.15 £26.72 £31.61 £36.51 £41.40 £46.30 £51.19 08 June 2024 07 November 2024 09 April 2025 08 September 2025 08 February 2026

Price Distribution

Price distribution over 611 days • 7 price levels

Days at Price
Current Price
136 days 68 days 75 days 190 days 90 days 6 days 46 days · current 0 48 95 143 190 £29 £41 £42 £44 £45 £48 £49 Days at Price

Price Analysis

Most common price: £44 (190 days, 31.1%)

Price range: £29 - £49

Price levels: 7 different prices over 611 days

Description

The R1 DUO heart rate transmitter uses two different transmission technologies. The data is sent to the ROX GPS 11.0 and 12.0 via ANT+. It can also be shared with a smartphone via Bluetooth Smart. All sport apps that support Bluetooth® SMART READY technology and use heart rate data can display the R1 DUO's values. Box Contains R1 ANT+ Heart Rate Transmitter (Battery Included)

Key Features

Heart rate transmitter.

Data transmission via ANT+

Compatible with ROX 10.0 GPS.

Compatible with ROX GPS 11.0.

Product Specifications

Brand
Sigma
Model
20504
Colour
Black
Size
Standard Size
Format
Apparel
Domain
Amazon UK
Release Date
28 April 2023
Listed Since
17 February 2014

Barcode

No barcode data available

Similar Products You Might Like

Polar H9 Heart Rate Sensor – ANT Plus/Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports (H9, XS-S,Black)
96% match

Polar H9 Heart Rate Sensor – ANT Plus/Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports (H9, XS-S,Black)

Polar

£54.50 25 Feb 2026
Polar H9 Heart Rate Sensor – ANT Plus/Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports (H9, M-XXL,Black)
96% match

Polar H9 Heart Rate Sensor – ANT Plus/Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports (H9, M-XXL,Black)

Polar

£44.30 19 Feb 2026
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Grey)
96% match

Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Grey)

Polar

£79.50 28 Jan 2026
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, XS-S,Black)
95% match

Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, XS-S,Black)

Polar

£74.99 27 Jan 2026
SUUNTO Smart Heart Rate Belt, Accurate Bluetooth Heart Rate Measurement Sensor, Multiple sports Comfortable fit for Running & Swimming, 500H Long Battery Life with Internal Memory, Waterproof, Black
95% match

SUUNTO Smart Heart Rate Belt, Accurate Bluetooth Heart Rate Measurement Sensor, Multiple sports Comfortable fit for Running & Swimming, 500H Long Battery Life with Internal Memory, Waterproof, Black

SUUNTO

£49.00 06 Feb 2026
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Black Crush)
95% match

Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Black Crush)

Polar

£78.72 27 Jan 2026
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Red)
95% match

Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Red)

Polar

£80.23 18 Mar 2026
Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Red Beat)
95% match

Polar H10 Heart Rate Monitor – ANT Plus, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in memory, Software updates (H10, M-XXL,Red Beat)

Polar

£87.70 27 Jan 2026
Wahoo Fitness TRACKR Heart Rate Monitor
95% match

Wahoo Fitness TRACKR Heart Rate Monitor

Wahoo Fitness

£79.99 01 Feb 2026
COOSPO Heart Rate Monitor Chest Strap H6M, Bluetooth ANT+ Heart Rate Monitor Chest Sensor with 400H Battery, HRM Works with Strava/Wahoo Fitness/Polar Beat/Peloton/Zwift/DDP Yoga App
95% match

COOSPO Heart Rate Monitor Chest Strap H6M, Bluetooth ANT+ Heart Rate Monitor Chest Sensor with 400H Battery, HRM Works with Strava/Wahoo Fitness/Polar Beat/Peloton/Zwift/DDP Yoga App

CooSpo

£29.99 01 Feb 2026
Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in & wristband Vantage V2 black silicon S-L
95% match

Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in & wristband Vantage V2 black silicon S-L

Polar

£99.98 02 Apr 2026
Polar Verity Sense - Optical Heart Rate Monitor Armband for Sport - ANTPlus and Dual Bluetooth HRM - Waterproof HR Sensor with only One Button (Verity Sense, M-XXL,Grey)
95% match

Polar Verity Sense - Optical Heart Rate Monitor Armband for Sport - ANTPlus and Dual Bluetooth HRM - Waterproof HR Sensor with only One Button (Verity Sense, M-XXL,Grey)

Polar

£86.50 31 Jan 2026
Polar OH1 N
95% match

Polar OH1 N

Polar

£48.99 31 Jan 2026
Garmin HRM-Fit Heart rate monitor purpose built for women
95% match

Garmin HRM-Fit Heart rate monitor purpose built for women

Garmin

£120.99 25 Feb 2026
Polar H10 Heart Rate Monitor – ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in & H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor
95% match

Polar H10 Heart Rate Monitor – ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in & H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor

Polar

Out of Stock 27 Jan 2026
Sigma Sport Accessories 00462 R2 DUO Speed/Cadence Combo Transmitter (Ant+/Bluetooth Smart)
95% match

Sigma Sport Accessories 00462 R2 DUO Speed/Cadence Combo Transmitter (Ant+/Bluetooth Smart)

Sigma

£63.99 13 Jan 2026
Polar Verity Sense - Bracelet with Optical Pulse Sensor - ANT+ Dual Bluetooth - Pulse Sensor & Pro Chest Strap - Heart Rate Monitor Belt
95% match

Polar Verity Sense - Bracelet with Optical Pulse Sensor - ANT+ Dual Bluetooth - Pulse Sensor & Pro Chest Strap - Heart Rate Monitor Belt

Polar

£121.00 05 Feb 2026
Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in & Pro Chest Strap - Heart Rate Monitor Belt
95% match

Polar H10 Heart Rate Monitor - ANT +, Bluetooth - Waterproof HR Sensor with Chest Strap - Built-in & Pro Chest Strap - Heart Rate Monitor Belt

Polar

£105.49 03 Mar 2026
Garmin HRM-200, Heart Rate Monitor with HRV data, 3ATM water rating, up to 1 year battery, machine washable strap, adjustable strap to ensure ideal fit, Size XS-S
95% match

Garmin HRM-200, Heart Rate Monitor with HRV data, 3ATM water rating, up to 1 year battery, machine washable strap, adjustable strap to ensure ideal fit, Size XS-S

Garmin

£79.49 25 Feb 2026
Garmin HRM-600, Premium Heart Rate Monitor, HRV data,Running Dynamics, Steps, Calories, Speed, Distance, Rechargeable battery,Record & sync data without a watch, machine washable strap, Size XS - S
95% match

Garmin HRM-600, Premium Heart Rate Monitor, HRV data,Running Dynamics, Steps, Calories, Speed, Distance, Rechargeable battery,Record & sync data without a watch, machine washable strap, Size XS - S

Garmin

£103.61 07 Feb 2026