Here is a smart wearable fitness device that helps you stay active. The OPPO Band 2 has a 1.57-inch AMOLED display and can read your heart rate and blood oxygen level. This fitness band weighs only 33g, so you can wear it around comfortably. It has over 100 workout modes, including a tennis mode. In that mode, the device can record your strokes, racket swings, activity duration, heart rate, and calories burned.
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The OPPO Band 2 is smart enough to let you know when abnormal heartbeat is detected. It also has sleep tracking. The battery lasts up to 14 days. It combines with your phone to let you set bedtime alarms, check the weather, and set timers.
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