Boat SmartRing Active Plus has been launched in India with a price tag of Rs. 2,999. It comes in six different sizes. The wearable has a list of sensors that help to monitor heart rate and blood oxygen saturation (SpO2). The SmartRing Active Plus is available in three shades.Boat SmartRing Active Plus has been launched in India with a price tag of Rs. 2,999. It comes in six different sizes. The wearable has a list of sensors that help to monitor heart rate and blood oxygen saturation (SpO2). The SmartRing Active Plus is available in three shades.