I am very happy with my new Sense 2, which is a replacement to my old (and still working) Charge 5. The GPS map is almost precise and doesn't have those wild jumps I sometimes saw with Charge 5. The distance matches well with my bike computer. The altitude chart is very helpful with understanding of heart rate spikes and with planning the subsequent exercises by the same route. The heart rate is, finally, realistic with this watch and matches the terrain and my speed when I am running. Ability to receive phone calls and talk over the watch is very handy, works well within Bluetooth range and produces good quality sound. ECG and EDA work well. EDA gives me the way to measure my HRV in daytime. No any problem with the battery. I keep it within 20...80 SOC range same as I would do for an electric car battery, by the Fitbit Coach advice. It is enough to only charge the watch while I am in the shower to ensure it works for 2 days with stress monitoring turned on. I love this device.
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