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Motiv Ring anillo de fitness, rastreador de sueño y ritmo cardíaco – Impermeable, monitor de ritmo cardíaco y actividad : Deportes y Actividades al Aire Libre - Amazon.com
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Amazon.com: Motiv Ring Fitness, Sleep and Heart Rate Tracker for iPhone and Android - Waterproof Activity and HR Monitor - Calorie and Step Counter - Pedometer. Ring Sizing Set and Redemption Kit
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