battery backup 1-3 days normal usage (power saving mode also available) bluetooth voice call: support call dial pad: support address book synchronization: support up to 1000 entries call records time display: support step counting: support calories sports mode: support (yoga/circular machine/climbing/swimming/running/strike) support alarm clock reminder: support shake to take pictures: support do not disturb mode find a bracelet: support dial switch: support heart rate: support blood pressure: support