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LAS VEGAS -- One of the most popular product categories at CES here has been health and fitness. A slew of companies have announced new devices for everyone from the average Joe to high-end athletes.

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The Gymwatch

Wear this wireless sensor on your arm or leg and it'll track your workouts at the gym. Through the company's smartphone app, the sensor will provide feedback on your form and count the amount of reps you perform while working out. It will also tell you if you're overextending your arms, not moving them enough or if you are going too fast.

One Gymwatch sensor retails for $200 in the US, which converts to about £130 in the UK or AU$250 in Australia. The company offers a bundle of two sensors for $390 (£255 and AU$485).

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InBody Band and InLab

In addition to tracking daily activities (steps, calories, distance and sleep), the InBody Band can measure your fat mass, percentage of body fat, heart rate, muscle mass and body mass index. This is done with the help of four sensors: two on the back and two on the front.

The more affordable InLab tracker strips out the screen and the body sensing capabilities. It can still track your steps, distance, calories burned and sleep at night.

Both the InBody Band and InLab will be available in the US in March. The InBody Band will cost $179, which converts to £115 in the UK and AU$220 in Australia. Pricing for the InLab tracker wasn't announced.

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Polar A300

This activity tracker measures your steps, distance, calories burned and sleep at night, which is done automatically. There's inactivity alerts and a silent alarm feature that will wake you up with a gentle vibration. The bands on the A300 are also interchangeable.

The Polar A300 will be available in the US in February in white, black and pink for $140. UK and Australian prices were not announced, but the US price converts to around £90 or AU$175, but expect final prices to differ. The watch can also be bundled with a heart-rate monitor for $180 (£120, AU$220 converted). Additional straps in white, black, pink, blue, gray and yellow can be had for $25 (£16 or AU$30 converted).

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Garmin Vivofit 2

The Vivofit 2 is a small refresh from last year's model. In addition to tracking your daily activity, it adds audible alerts, a backlight and a workout timer. The strap on the tracker can be swapped out for different designs, such as a leather band or even a stainless steel one. The company also announced a partnership with Jonathan Adler, a designer and potter, to offer a special collection of pattern-printed bands.

The Garmin Vivofit 2 will begin shipping in the first quarter. The tracker will be available in black, white, navy and pink for $130 in the US. That price converts to about £85 in the UK and AU$160 in Australia.

The black and white bands can also be bundled with a heart-rate sensor for $170 (£110, AU$210) and a three-pack of colored accessory bands will be available for $25 (£15, AU$30).

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Magellan Echo Fit

The Magellan Echo Fit is a daily activity tracker that can sync with popular apps from RunKeeper, MapMyFitness and Strava to track your workouts.

The Magellan Echo Fit is available now for $130 (converted to £85 and AU$160) and $180 (about £120 in the UK and AU$220 in Australia) when bundled with a heart-rate monitor.

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LifeTrak Gem

The LifeTrak Gem is a continuous heart-rate monitor that can be placed on your arm, leg or wrist. It's intended for people who are interested in their heart rate when working out at the gym or going for a run. While it can track your steps, distance and calories burned, it's not meant to be worn all day. The battery life will only last 10 hours.

The workout model of the LifeTrak gym is slated to arrive in the fourth quarter of 2015 and will cost $90. UK and Australian pricing wasn't released, but the US price converts to around £60 or AU$110.

A more consumer-friendly model that will include continuous heart rate, one week of battery life and be able to chart your daily activities -- steps, distance, calories burned and sleep -- is slated to arrive in the spring of 2016. This model will cost $110 (roughly £70 or AU$135).

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iHealth Edge

The iHealth Edge can track your steps, distance, calories and sleep, which is done automatically. It will also alert you when you're inactive and wake you up in the morning with a gentle vibration.

It's available now for $70 (converted to £45 for those of you in the UK and AU$85 for Australia).

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The Digitsole is half activity tracker and half foot warmer. No, really. The smart insole is placed in your sneakers, where it can track your steps, distance and calories burned and determining your altitude. Believe it or not, the Digitsole also includes a built-in thermostat and can warm your feet. Each insole can individually be adjusted to the perfect temperature using the company's smartphone app.

A pack of two Digitsole insoles is available now for $200. The Digitsole is also available in Europe for €150, which converts to about £115 in the UK. Pricing and availability wasn't announced for Australia, although the US price converts to AU$250.

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Mio Alpha 2

The Mio Alpha 2 is a continuous wireless heart-rate monitor with a built-in accelerometer. While there's no sleep tracking or step counter, the device can track your calories, pace, speed and distance. It can also be paired with many of the popular fitness apps available for Android and iOS, such as MapMyRun, RunKeeper, Strava and Mio Go.

The Mio Alpha 2 is available now in black or yellow for $200. International pricing and availability wasn't announced, but that price converts to about £130 and AU$250.

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Misfit Swarovski Shine

This blingy band provides daily activity tracking for things like steps, distance, calories and sleep without being an eyesore (well, that's the idea -- your taste may vary). Misfit partnered with Swarovski to offer two new Shine models, with bands and pendants that look like jewelry.

There are two versions of the new Shine: clear crystal and violet crystal. The violet one is actually solar-powered, meaning you never have to charge it or replace the battery.

The solar-powered version won't be in stores until June this year, however the clear crystal version of Swarovski Shine will be available this March for between $170 and $250 (equivalent to £110-165, or AU$210-310) depending on the bracelet or necklace bundle you choose.

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Quell uses Transcutaneous Electrical Nerve Stimulation technology, known as TENS, to relieve nerve-related pain in as little as 15 minutes. After strapping the passport-size device to the back of your calf and turning it on, the device will send electrical pulses to your nerves that signal your brain to release pain-relieving opioids. The company claims that Quell can reduce pain caused by conditions such as sciatica, fibromyalgia, rheumatoid arthritis, knee injuries, sprains and labor pain.

An accompanying app gives information about your therapy sessions, the device's battery life and your sleep, which the Quell can track using a built-in accelerometer.

Quell will available this spring for $250. Additional electrode strips will cost around $30 and will have to be purchased monthly with normal use. UK and Australian details weren't announced, but the main price converts to around £165 or AU$310.

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Razer Nabu X

The Razer Nabu X is an entry-level activity tracker that can measure your steps, distance, calories and sleep. It also uses a three-color LED light system that can vibrate or pulse red, green or blue, to alert you to notifications from your smartphone. The lights can be customized to mean different things inside of the company's Android and iOS app. For example, red can be set as a missed call, while red and blue together could be an email alert.

The Nabu X will be available in February for $50, which converts to roughly £35 or AU$60. Subscribers to the company's community-driven Razer Insider will be able to buy it for $20.

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Hocoma Valedo

This pair of wearable sensors aims to reduce and prevent lower back pain, with the help of two sensors that attach to your skin. One is placed on your back and the other on your upper chest. The two sensors then connect to the Valedo app on your iOS device, which will ask you to run through a series of exercises. The app will offer you tips and feedback to help improve helps you strengthen your back and prevent future pain.

Valedo has been FDA-approved for use in the US. The device is available now for $359. UK and Australian details were not announced, but that converts to around £240 or AU$445.

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Garmin Vivoactive

This ultra-slim GPS smartwatch is aimed at athletes, with built-in apps for running, cycling, golfing and even swimming -- the watch is waterproof up to 50 meters. The GPS enables the watch to track these activities even if you aren't connected to your smartphone. It will also track your daily activities, such as steps taken, distance traveled, calories burned and sleep at night. The watch can also display notifications, such as emails, text messages, phone calls and social media alerts, from your smartphone. All of this information is displayed on the device's high-resolution color touchscreen.

The Garmin Vivoactive will be available in the US in black or white for $250 in the first quarter of the year. It can also be bundled with a heart-rate monitor for $300. Pricing and availability for the UK and Australia weren't available at the time of writing, but the US price converts to about £160 and AU$310, while the heart rate bundle increases those prices to £195 and AU$375.

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Garmin Fenix 3

The Garmin Fenix 3 is a multisport GPS training watch that includes various smart features. In addition to being able to measure your steps taken, distance traveled, calories burned and sleep at night, the device features GPS and GLONASS (a satellite navigation system used in Russia) to track your distance and pace while running, cycling or swimming. It can also display notifications from your smartphone for things like calls, text messages and emails.

The Garmin Fenix 3 training watch will be available in the first quarter of the year for a starting price of $500, or $550 when bundled with one of Garmin's heart rate sensors. Pricing wasn't announced for other countries, but the US price coverts to about £330 and AU$620 for the watch, and £360 and AU$680 for the heart rate bundle.

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FreeWavz are completely wireless earphones that include fitness tracking and built-in heart rate. The earphones can also connect various Android and iOS apps to track your pace, distance and speed when running and cycling.

FreeWavz earphones are available for pre-order in the US for $250. UK and Australian launches seem unlikely, but that converts to around £165 or AU$310.

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Oral-B Pro SmartSeries 7000

Here's a toothbrush that connects your iPhone or Android device through Bluetooth. With the help of Oral-B's mobile app, the SmartSeries 7000 toothbrush gives you real-time feedback on your brushing. You will be informed which part of your mouth you should be brushing and if you miss any areas. The app will even attempt to correct your bad brushing behavior.

The Oral-B Pro 7000 SmartSeries toothbrush is slated to arrive in the US in late February for $219. It's already on sale in the UK for £173 and Australia for AU$330.

Click here to learn more about the Oral-B PRO 7000 SmartSeries toothbrush.

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Concussions have become an increasing problem in contact sports. Force Impact Technologies aims to solve this problem with its FitGuard mouthguard. The Bluetooth-enabled device measures the impact of hits while playing a sport and tracks the amount of hits. A companion smartphone app can be used to monitor an athlete for any possible head injuries. Unfortunately the battery life isn't all that good, about 4 to 6 hours before a recharge it required.

The FitGuard will be available later this year for $99, which converts to roughly £65 or AU$125.

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Lenovo Vibe Band VB10

The Lenovo Vibe Band VB10 has an e-ink screen for always-on notifications from your smartphone. It can also track your daily activities, although not your heart rate.

The Vibe Band will be available in the US in April for $89 (which converts to about £60 or AU$110).

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Epson Runsense watches

Espon has three new Runsense running watches: the SF-510, SF-710 and SF-810. All three models are waterproof up to 50 meters and include GPS to track your pace and distance, a smart stride sensor to calibrate stride length (in the event the GPS signal is lost) and a finish time estimator. The SF-710 model adds vibration, while the SF-810 features a built-in optical heart-rate monitor.

Battery life for the SF-510 and SF-710 is said to be 30 hours with a continuous GPS signal, which is much longer than many other running watches. The SF-810 will last about 20 hours with the heart-rate sensor enabled and a continuous GPS signal.

Runsense watches will begin shipping in the second quarter of this year. Prices for the SF-510, SF-710 and SF-810 range from $250 to $350, which converts to £165 to £230 in the UK and AU$310 to AU$430 in Australia.

Click here to learn more about Epson's Runsense watch.

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