Fitness and Cross-training

Polar Loop Crystal

Polar Loop Crystal is like a piece of jewelry, but with intelligence inside. The activity tracker will monitor your daily activity and even your sleep patterns, motivating and guiding you towards improved fitness and health. Polar Loop Crystal is stylishly embellished with crystals from Swarovski®.

Buy now - $159.95

Intelligently beautiful

Polar Loop Crystal is an elegant activity tracker dazzling with Swarovski crystals. With the bracelet's soft and flexible material, it will sit perfectly on your wrist and motivate you to move every day.

Personalized activity goal

Years of research have led Polar to create a method that creates an individual daily activity goal for you - based on more than just steps. The Activity Goal on the Polar Loop Crystal is customized to your personal details and activity level, and visually fills up during the day based on the amount and intensity of your activity.


Sleep and lying down


Sitting and other passive activities


Standing, light housework


Walking and other medium intensity activities


Running, jogging and other intensive activities

Intensity levels

Unique Polar technology enables the Polar Loop Crystal to track your daily activity at five intensity levels: resting, sitting, low, medium and high. Low to high intensity movement fill up your activity bar so you can easily see how much progress you’re making.

Polar Loop Crystal Features

Designed to motivate you every day

  • Smart Coaching
  • Features
  • Specs

Activity Guide

Shows how active you’ve been during the day and gives practical guidance for reaching your daily activity goal. More ›

Activity Benefit

Gives feedback on your daily, weekly and monthly activity, showing how your active choices help you stay healthy. More ›

Smart calories

Lets you know exactly how many calories you’ve burned. More ›

Energy Pointer

Gives clear guidance on how to get into shape faster. Polar H7 heart rate sensor required. More ›

Training Benefit

Motivating feedback right after exercise. Polar H7 heart rate sensor required. More ›

Heart rate during training

Shows your current heart rate with the touch of a button during training. Polar H7 heart rate sensor required.

Polar Loop Crystal white

Steps and Distance

Tracks your steps and uses that data to calculate the distance you've completed.

Inactivity Alert

Reminds you with vibration to get up after 55 minutes of sitting, adding active breaks to your daily routines.

Smart Calories

Lets you know exactly how many calories you’ve burned. The individual algorithm is based on your personal data: weight, height, age, gender and the intensity of your physical activity.

Activity Goal

Shows how active you’ve been during the day and gives practical guidance for reaching your daily activity goal. Breaks up your activities into five intensity levels: resting, sitting, low, medium and high.


Automatically tracks your sleep time and quality. Check and learn more about your sleeping patterns in the Polar Flow web service and app.

Smart Notifications

Vibrates and notifies you about incoming calls, messages and calendar reminders.


With soft silicone wristband

Weight 38g
Thickness .42 in
Width .78 in
Size 145-240mm (5.7-9.4")


Rechargeable 38 mAh Li-pol battery
Battery duration: Up to 8 days with 24/7 activity tracking and 1h/day training (without smart notifications) and up to 3 days with 24/7 activity tracking and 1h/day training (with smart notifications)


Easy wireless sync via Polar Flow app with Bluetooth® Smart
Custom USB connector for charging and data sync with PC or Mac via Polar FlowSync
Polar Flow web service compatibility with Mac OS X 10.6 or later and PC Windows XP, 7, 8, 10
Updatable software
UI languages in Polar Flow: English, Spanish, Portuguese, French, Danish, Dutch, Swedish, Norwegian, German, Italian, Finnish, Polish, Russian, Chinese, Japanese

Fashion and fitness fused together

Your heart rate is the most accurate fitness indicator. The best way to improve your fitness and see results is to exercise at the right intensity. Connect the Loop Crystal with the Polar H7 heart rate sensor and make sure you don’t skip a beat. The H7 will show your real time, accurate heart rate on your wrist while you work out.

Learn more

Polar Ecosystem

Polar Flow web service and app

Follow your daily progress and get guidance that helps you meet your goals. Learn how changing your daily routine can improve your wellbeing.

Polar Coach

Free online tool for your coach or personal trainer to easily follow your progress.

Sensor compatibility

Add a Polar H7 Bluetooth® Smart heart rate sensor for real time, accurate heart rate on your wrist.


Keep tabs on your nutrition by connecting with the world’s largest food, nutrition and calorie database (iOS only).

Make it yours

Webstore available in selected countries



Buy Now - $159.95
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Support and latest updates

Product Support


Upgrade your performance

Polar Loop Crystal is rated 4.071428571428571 out of 5 by 14.
Rated 5 out of 5 by from The Right Activity Band for My Activity My philosophy on activity bands: Activity bands don't make you "fit." It's what you do with the information collected from the band that will help you get to your fitness goals. When reviewing this type of product, I think it's important to provide a brief explanation of my fitness activity and fitness goals to provide perspective on why I went with the Polar Loop 2 as there are many alternatives with higher reviews from multiple sources. Fitness is a main part of my life, so researching the best activity tracker for ME was very important. I immediately thought of Polar when starting to research activity bands because they are a leader in heart rate monitoring equipment. Monitoring my heart rate was a leading reason of getting an activity band, not simply to track steps, be encouraged to be active, loose weight, etc. There are many activity bands that monitor your heart rate, but no band is as accurate as the chest strap heart rate monitor (I have the H7 chest band), based on my research as of today. I purposely wanted an activity band to pair with a chest strap heart rate monitor for the most accurate heart rate reading. My fitness background: I compete in bodybuilding and have competed in power lifting. I lift weights on average 6 times a week from moderate to heavy sessions. During bodybuilding competition season, cardio for some is a big part of their cutting of weight process. I have found after a few years of experience, that controlling my weight by cutting food isn't as effective for me, so I have to include more cardio in my routine than I ever wanted to. Because of my loathing for cardio, I want to be the most efficient with my time and that is how heart rate monitoring will aid in this. I think the H7 heart rate monitor chest strap pairs very well with the activity band itself and the Polar Beat app (can show your heart rate on one or the other at a time). I don't need the "social" aspects of an activity band such as the ability to see other's activity, be motivated, compare my activity to others, etc. This band has the "social" aspects with the Polar Flow app, but that wasn't my focus. I like that the Loop 2 picks up on smaller movements, which is important to me because when weight lifting, you often aren't making big strides when moving. Reason I went with the Polar Loop 2 Overview: 1. Pairs with the H7 heart rate chest strap/band nicely for very accurate tracking 2. Picks up on smaller movements which is beneficial for people who lift weights 3. Overtime, becomes more accurate on tracking steps, which provides a more accurate reading on calories burned, etc. 4. I like the activity display: Time, Cals, Steps, Activity to go - job, walk, or being up 5. Airplane mode option 6. Alarm 7. Decent app with useful statistics 8. Text and call notifications (I turned off) 9. Appearance - I have had the Loop 2 Crystal for about two weeks* (see below) and have gotten many compliments 10. Lights dim when battery is low 11. Crystals! (everything is better with crystals, in my opinion) 12. Water resistant 13. Battery life - just like other reviews, battery lasts about 4 days, which is fine to me. Charging is fairly quick as well, about an hour and half. 14. Monitors sleep activity 15. Pair with My Fitness Pal *The negative: After doing much research, there were people that commented that some of the LEDs went out so I knew that was a risk in purchasing. Unfortunately, one LED went out shortly after receiving it and others started to dim after less than a week. I was extremely disappointed that I would have to deal with warrantying the band, but again, wasn't surprised based on other reviews. However, in this day and age, companies are are typically good at satisfying their customers, which is what I expected from Polar. I contacted Polar's support and confirmed my issue was under warranty and provided clear instructions on the warranty process. I returned the activity band, and was kept informed on the status and it was returned in less than a week. Even after only having the Loop 2 for less than a week, you grow kinda attached to it... So, I was very pleased on the quick, turn-around. BUT, when I got my Loop 2 back, the issue I sent it in for wasn't actually fixed. So, I contacted Polar again, and without hesitation, they corrected the situation to my satisfaction without any hassle. I also read complaints about syncing the band with the app. I would admit it can take a couple of "refreshes" for the activity to display on the app, but nothing too cumbersome in my opinion. By watching the progress circle on your phone, this lets you know that the sync is still in progress rather than continuing to swipe your screen to refresh - have some patience. There can be a bit of delay from when you check your steps. For example, if you check your step count, then take some steps and check again, it may not display the steps taken immediately but refreshes the step count fairly quickly. Do you really need to watch your step activity while stepping on a regular basis??? In short, I would recommend this activity band if you are interested in heart rate monitor training and not if you simply just want to track steps. But if you want to tracks steps and have an attractive crystal band, than that works too. :)
Date published: 2016-04-24
Rated 3 out of 5 by from Acetate Fun, accurate, helpful, elegant appearance.. I love the look for the summer, but wish they had the Crystal Loop in the black band.for winter. The closure clasp is way too large on the Polar loop. I have a tiny wrist, therefore; between the clasp and the stiff face it's not flexible by any means and becomes uncomfortable at times because my wrist feels constricted especially when using a mouse at work. I think this device is made with a large wrists in mind. My Mother agrees it's not designed for tiny wrists, she has a loop as well. I love the features except it never syncs when I want it to. I have this issue constantly. I think another button for syncing would be better. It scrolls through but won't sync and if I press down too hard it turns it to airplane mode. I think it's way overpriced for its negative aspects. Polar has created an acetate device but is lacking in the comfort and syncing aspects.
Date published: 2016-04-24
Rated 3 out of 5 by from Looks good but not all that functional The product looks great but lacks alot of use. It says i have a message when i get a phone call and it gets stuck on calendar/email mode for some reason. The battery last for about two days. Wish i did more research on this product before i purchased it. I mainly got it for the look and style of it.
Date published: 2016-02-23
Rated 3 out of 5 by from Tracking exercise Very Comfortable compared to FitBit, but doesn't track exercise only steps, I guess since it doesn't track heart rate
Date published: 2016-02-21
Rated 3 out of 5 by from Beautiful piece and it works great but... Overall, it works great, I have no syncing issues, I can track everything and I like this piece better than other brands I've tried and stopped using but, I've had it less than a week and the lights in the band are starting to go out. After a week wearing it, not banging it, not doing anything that I should not be doing with it and the lights fail - disappointing to pay that cost and have issues already. I would love to revise this review to 5 stars, this is exactly the type of piece I've been in the market for - it's beautiful but at least mine is flawed.
Date published: 2016-01-29
Rated 4 out of 5 by from Daughter loves it Likes it much better than her other tracker. Hit 9500+ steps first day. She may have me convinced to buy one. Gave it a 9 only because she has only had it for less than 2 weeks
Date published: 2016-01-04
Rated 5 out of 5 by from Love the styling of this beautiful sports watch. This product has met my expectations. It's gorgeous and very feminine looking. I've only had it a few days and have had so many comments on it.
Date published: 2015-12-29
Rated 3 out of 5 by from Syncing issues Syncing issues with polar flow app. Pretty though!
Date published: 2015-12-26
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Polar H7 heart rate sensor

Heart rate sensor

  • Pair it with your fitness app to get real time, accurate heart rate while you train.
  • Affordable first step into heart rate-based training.

Starting from $79.95

Learn more