General - Model: Ultra 3 GUS-01. - Size: 49mm. Display - Screen size: 2.20 inch. - HD Touch Screen. Platform - APP: ZTFit. Connectivity features - Bluetooth: Yes. Battery - Battery type: Lithium polymer. - Charging method: Magnetic Wireless Charging. Activity tracking function - Full Screen - Message - Calories - Double Touch - Pedometer - Calling - Weather - Find for Phone - Touch sensitive - Sleep Monitoring - Stop Watch - Voice Assistant - Music - Sedentary Reminder - Sports Mode - Photograph - Alarm Clock - Multiple languages Watch & Band - Number of Band: 7. - Band Material: Silicone. - Band Changes: Yes. - Color (Watch & Band): - Watches: Black / Gold. - Bands: Black, Pink, Brown , Blue , White , Ultra Orange, Ultra Black.