Product description

We designed this watch for runners to measure their heart rate to help them manage their workouts.

It's easy to regulate your effort using your target zone.

KALENJI

ONRHYTHM 110 runner's heart rate monitor watch black

QAR 45.00 69.00ق.ر QAR 69.00 QAR 69.00

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3.71/5

2548 reviews

3.71/5

2548 reviews

MEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just below your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	XS	S	M	L	XL	2XL	3XL	4XL
Chest (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

BOTTOMS (SHORTS, PANTS, BOARDSHORTS)

Size	XS	S	M	L	XL	2XL	3XL
Hips (cm)	84-86	87-91	92-97	98-104	105-111	112-118	119-126

SWIMWEAR

Size	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

WOMEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Band size: Wrap a tape measure horizontally around your torso just below your breasts.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hip size: Wrap a tape measure horizontally around the largest part of your hips.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	3XS	2XS	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Chest (cm)	76-79	80-83	84-87	88-91	92-95	96-99	100-103	104-107	108-113	114-118	119-123

BOTTOMS (SHORTS, PANTS)

Size	3XS	2XS	XS	S	M	L	XL	2XL	3XL
Hips (cm)	81-85	86-90	91-96	97-102	103-108	109-114	115-120	121-128	129-136

BRA

Size	70A	70B	70C	70D	75A	75B	75C	75D	75E	80A	80B	80C	80D	80E	85B	85C	85D	85E
Chest size (cm)	80-86	80-86	80-86	80-86	86-92	86-92	86-92	86-92	86-92	92-100	92-100	92-100	92-100	92-100	100-106	100-106	100-106	100-106

SWIMWEAR

Size	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	90-93	94-97	98-101	102-105	106-109	110-113	114-119	120-125	126-131

KIDS SIZE GUIDE

How to measure:

Clothing size: Stand upright and place your bare heels flush against a wall. Measure the distance between the bottom of your foot and the top of your head.
Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

APPAREL

Age	3 Months	6-9 Months	9-12 Months	18 Months	2 Years	3 Years	4 Years	5 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Height (cm)	56-63	64-70	71-76	77-82	83-89	90-97	98-104	105-114	115-124	125-132	133-142	143-152	153-162

SHOES SIZE GUIDE

MEN SHOES

US Size	6.5	7	7.5	7.5	8	8.5	9	9.5	9.5	10	10.5	11	11.5	11.5	12	12.5	13
EU Size	39	39.5	40	40.5	41	41.5	42	42.5	43	43.5	44	44.5	45	45.5	46	46.5	47
Foot Length (in)	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2	10 ^1/2	10 ^3/4	10 ^3/4	11	11 ^1/4	11 ^1/4	11 ^1/2	11 ^1/2	11 ^1/2	11 ^3/4

WOMEN SHOES

US Size	4	4.5	5	5.5	5.5	6	6.5	7	7.5	7.5	8	8.5	9	9	9.5	10	10.5
EU Size	34	34.5	35	35.5	36	36.5	37	37.5	38	38.5	39	39.5	40	40.5	41	41.5	42
Foot Length (in)	8 ^1/2	8 ^1/2	8 ^1/2	8 ^3/4	8 ^3/4	9	9 ^1/4	9 ^1/4	9 ^1/2	9 ^1/2	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2

KIDS SHOES

US Size	4.5C	5C	5.5C	6C	7C	7.5C	8.5C	9C	10C	11.5C	12.5C	13C	1	2	2.5	3.5	4	5
EU Size	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37
Foot Length (in)	4 ^3/4	5	5 ^1/4	5 ^1/2	5 ^3/4	6	6 ^1/4	6 ^1/2	6 ^3/4	7	7 ^1/4	7 ^1/2	7 ^3/4	8	8 ^1/4	8 ^1/2	8 ^3/4	9 ^1/4

GEAR SIZE GUIDE

KIDS BIKES

Bike size	12"	14"	16"	20"	24"
Kids height (cm)	75-90	90-105	105-120	120-135	135-155
kids height (ft)	2'5'' - 3'	3' - 3'5''	3'5'' - 3'11''	3'11''- 4'5''	4'5'' - 5'1''

ROAD BIKES

Bike size	48 (XS)	51 (S)	54 (M)	57 (L)	60 (XL)
Your height (cm)	135-150	150-165	165-176	176-184	184-195

MOUNTAIN BIKES

Bike size	XS	S	M	L	XL
Your height (cm)	135-150	150-165	165-176	176-184	184-195

SKIS

Ski size	115-130	125-140	130-145	135-150	135-155	145-165	150-170	155-175	160-180	165-185	170-190	175-195	180-200
Your height (cm)	132	137	142	147	152	158	163	168	173	178	183	188	193

SNOWBOARDS

Snowboard size	128-136	133-141	139-147	144-152	149-157	154-162	159-167	160+	160+	160+
Your height (cm)	147	152	158	163	168	173	178	183	188	193
Your weight (lb)	50-55	55-60	60-65	65-70	70-75	75-80	80-85	85-90	90-95	95-100

ACCESSORIES SIZE GUIDE

KIDS GLOVES

Glove size	4 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Hand size (cm)	13.9-14.9	14.9-15.9	15.9-16.9	16.9-17.8	17.8-18.6	18.6-19.5

ADULT GLOVE

Glove size	XS	S	M	L	XL	2XL	3XL
Hand size (cm)	20.3-20.8	20.9-21.4	21.5-22.1	22.2-22.7	22.8-23.4	23.5-24	24.1-24.7

BOXING GLOVES

Glove size	6oz	8oz	10oz	12oz	14oz
Your weight (lb)	77-99	99-143	143-172	172-198	>198

Product description

We designed this watch for runners to measure their heart rate to help them manage their workouts.

It's easy to regulate your effort using your target zone.

Description

We designed this watch for runners to measure their heart rate to help them manage their workouts.

WHY RUN WITH A HEART RATE WATCH?

Heart rate is measured in BPM (beats per minute). The more intensively you exercise, the faster your heart beats, and the more your BPM increases. As you train, you will learn the best heart rate for you to be able to complete your run without losing your breath. Aim for that rate, and you will be able to run more regularly and more easily.

SET YOUR TARGET ZONE

Manage your training sessions using the target zone settings.It shows you, in real time, whether you are within the target zone you have set up. The ONrhythm 110 features a mode that lets you set up heart rate target zones in beats per minute (BPM).

HOW IS MY HEART RATE MEASURED?

Your heart rate is measured by the strap worn around your chest.The strap has two electrodes and a transmitter. When your heart beats, it transmits very weak electric fields. They are detected by the electrodes and sent to your watch via the transmitter on the chest strap.

CAN MY SIGNAL BE DISTURBED BY OTHER HEART RATE MONITORS?

The ONRHYTHM 100 communicates with the chest strap using a non-coded signal. As a result, they can be disturbed by other heart rate monitors nearby. If you run on your own or with a partner who doesn't use a similar heart rate monitor, it's not a problem! If you run with a group, we recommend you choose a coded heart rate monitor, such as the ONRHYTHM 500.

Easy to read in the sun and in the dark.

The ONRHYTHM 110 has what is known as a reflective screen. It reflects the surrounding light.The more sun there is, the easier it is to read the screen! When running in the dark, you can use the backlight button to light your screen.

It's a watch too!

The ONRHYTHM 110 watch also tells the time and date. You can also set an alarm.

Batteries

Watch: CR2032 included - Belt: CR2032 included

Dimensions

Thickness12mm | Diameter: 43mm Weight: 43 g

Warranty and after-sales service

DECATHLON products include a 2-year warranty. For any questions, visit our support website support.geonaute.com . You will find tips to make effective use of your device: instructions, frequently asked questions from our users, and video tutorials. In order to provide you with maximum support, the assistance support team is available 24/7 and will respond to you personally.

USER RESTRICTIONS

This watch is designed for sport and leisure. It's not a medical device. The information provided by the watch is for information purposes only and must not be used to track a pathology.

It's easy to regulate your effort using your target zone.

We designed this watch for runners to measure their heart rate to help them manage their workouts.

WHY RUN WITH A HEART RATE WATCH?

SET YOUR TARGET ZONE

HOW IS MY HEART RATE MEASURED?

CAN MY SIGNAL BE DISTURBED BY OTHER HEART RATE MONITORS?

Easy to read in the sun and in the dark.

It's a watch too!

The ONRHYTHM 110 watch also tells the time and date. You can also set an alarm.

Batteries

Watch: CR2032 included - Belt: CR2032 included

Dimensions

Thickness12mm | Diameter: 43mm Weight: 43 g

Warranty and after-sales service

USER RESTRICTIONS

This watch is designed for sport and leisure. It's not a medical device. The information provided by the watch is for information purposes only and must not be used to track a pathology.

It's easy to regulate your effort using your target zone.

We designed this watch for runners to measure their heart rate to help them manage their workouts.

3.71/5

2548 reviews

Your reviews

Incorrect reading

I’m using it when cycling, at the beginning all is good, however later on the sensor always shows much higher heartbeat(comparing with my Apple Watch and also with old school timed counting)

Andrey | 25 October 2023 |

Careful with the strap

I bought this set- up to run in MAF so continuous heartrate reading v useful and no silly beeps. Works well, comfortable , good price But, the monitor goes around your chest and the buckle connection can be a faff to get off. Over enthusiastic wiggling caused the rubber to split a bit, so I dobbed some super glue to prevent it getting worse. I am in a running program and couldn't send it back (refused to send me a replacement strap) so made- do.

Helen | 06 March 2023 |

Brilliant

Helped me identify my low and high bpm zones so I can find that sweet spot bpm and I was able to do my first 10k using the watch to monitor my bpm and keep withing a certain zone.

Steven | 06 June 2022 |