Operating system ROTS Memory storage capacity 256 MB Special features Activity Tracker, Alarm Clock, GPS, Gesture Control, Notifications, Phone Call, Touchscreen Battery capacity 350 Connectivity technology Wi-Fi About this item Ultra-Accurate Health & Fitness Tracker: The CMF Watch 3 Pro smart watches enhance your fitness journey with advanced heart rate tracking (4-channel sensor, 10%+ accuracy boost), precise sleep monitoring (5%+ accuracy, sleep zone tracking), stress, SpO₂ levels, and L1+L5 Dual Band GPS for ultra-accurate navigation. The watch features 130+ exercise modes with GOMORE-powered performance analysis, 7-type motion recognition, plus daily health guidance for a smarter, healthier lifestyle. Your AI Life Companion: The CMF Smartwatch enables crystal-clear Bluetooth calls with AI noise reduction, a built-in mic, and speaker, supporting 30 contacts. New gesture control allows one-handed operation for calls, music, morning news, smart wallpapers, voice notes with transcripts, ChatGPT on wrist & personalized fitness Coaching, and more. Requires Android 6.0 or iOS 13+. Download the Nothing X App 3.0, all on Your Watch! Note: ChatGPT is currently only available on Nothing smartphones.