amazon has Polar A300 Fitness Tracker and Activity Monitor $54.91
ACTIVITY TRACKER: Waterproof fitness monitor motivates you to reach your daily goal by tracking your steps, distance, and calories burned 24/7
ADVANCED TECHNOLOGY: Vibrating inactivity alerts help you keep moving throughout the day
SLEEP TRACKER: Automatically tracks your sleep time, quality of sleep, and sleep patterns
COMPATIBLE: Compatible with H7 Heart Rate sensor for continuous, accurate heart rate
CUSTOMIZE: Design your A300 fitness tracker to fit your style with interchangeable wrist bands in different colors
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