U13 2012

This watch is only missing a GPS.

The Basis  is the first continuous health tracker that measures heart rate at the wrist. A green LED on the underside of the watch shines light (the blood absorbs green particularly well) and then it measures how much light is reflected back. Blood volume is highest immediately after a heartbeat, hence the watch can determine pulse. Also includes a three-axis accelerometer to detect motion, electrodes to measure galvanic skin response, and heat sensors to track skin and environmental temperature, providing real-time data: steps, calories burned, heart rate.

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