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Fitness bands 'less accurate than smartphones' in counting steps | Wearable technology | The Guardian
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Amazon.com: HUAKUA Fitness Tracker Watch for Men Women Kids, No Bluetooth No APP No Phone Needed, IP68 Waterproof Full Touch Screen Sports Watch with Steps Calories Counter Sleep Tracker Alarm Clock (Gray) :
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Willful Fitness Tracker with Simple Pedometer and Sleep Monitor Watch for Men and Women, IP68 Waterproof, Blue - Walmart.com
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