Cellular is built into every Watch Ultra With a service plan you can call and text Refer to legal disclaimers Stream your favorite music and podcasts Refer to legal disclaimers Or tap into thousands of apps to do even more Health and Safety Get deep insights for healthier habits Track your sleep Get help quickly in an emergency Fitness Train in new ways with advanced metrics Track your daily activity and favorite workouts. Personalization Add a new band to change up your look. Discover, customize, and share watch faces. Adds style to your look and easy to carry everywhere Sports smart watch more features equipped for your choice Battery capacity 380mAH Key method full screen touch three buttons knob Charging interface wireless charging Bluetooth version:5.2 Screen display:2.02inch-square screen-385 Battery capacity:380mAH Key method: full screen touch + three buttons + knob Charging interface: wireless charging APP: Wear Fit pro