I was looking for a Coach to better track my physical activity and quality of my sleep. If I hesitated between several products, some of which were used by friends, I chose very quickly Withings Pulse (not the O2 at the time) that corresponded perfectly to my expectations: - Reliable basic functions (pedometer, distance, calories burned); - Calculation of elevation gain (excellent gadget and not, I love this feature); - OLED touch screen (for easy reference measurements of the last days); - Battery life (nearly a week with manual synchronizations and not necessarily regular / daily); - Calculating heart rate (and oximetry since the last update!) - Size and weight 8g ... for all that, it's just great!
I regret only one thing, it is not waterproof and I hope that the next accessory will someday.