Fitbit Charge HR - Refurbished สีดำ ขนาด S ยังไม่เคยใช้งาน แถมปลอกกันรอยให้ด้วย 1 อัน รายละเอียดสินค้าFitbit รุ่น Charge HR Size Small - Black The power of heart rate on your wrist For better fitness,start with heart.Let your heart be your guide with Charge HR. Monitor heart rate automatically and continuously right on your wrist to accurately track calorie burn, maintain workout intensity, maximize training and optimize healthall without an uncomfortable chest strap. Get better tracking with every beat.Take control of your goals by using Charge HR to record your workouts and track all-day activity like heart rate, steps, distance, calories burned, stairs climbed and active minutes. With an impressive battery life up to 5 days and instant access to every stat, you dont have to look far for motivation to keep moving.อ่านเพิ่มเติม