Specification Brand Zeblaze ModelStratos 3 Ultra GPS Positioning 5 Satellite Positioning Systems Dual-band GNSS(GPS, GLONASS, GALILEO, QZSS, BDS)Assisted GPS for fast fix times. Bluetooth Version BT 5.3 Operating Mode Full-Touch Compatible OS Android 5.0 or iOS 11 and above APP ...Specification Brand Zeblaze ModelStratos 3 Ultra GPS Positioning 5 Satellite Positioning Systems Dual-band GNSS(GPS, GLONASS, GALILEO, QZSS, BDS)Assisted GPS for fast fix times. Bluetooth Version BT 5.3 Operating Mode Full-Touch Compatible OS Android 5.0 or iOS 11 and above APP Name Zeblaze Fit Review Share Your Activity Sync Workout Data to Apple Health Strava UI Language English, Português, Русский, Deutsch, Français, Italiano, Español, Türkçe, Polskie, Tiếng Việt, Arabic, 简体中文 APP Language English, Português, Русский, Ukrainian, Deutsch, Français, Italiano, Español, Türkçe, Polskie, 日本語, 한국인, Indonesian Push Language English, Português, Русский, Deutsch, Français, Italiano, Español, Türkçe, Polskie, Tiếng Việt, Arabic, 简体中文Special Features Information Reminder Call Reminder Reject the Call Message Reminder APP Notifications Health Activity Tracking: Activity Record, Step Counter, Standing, Move Bar (Displays on device after a period of inactivity of inactivity; Walk for a couple