System update released for battery drain issue. Compatible with all Android Smartphones 46MM (1.91-inch) AMOLED Flexible Dual-Curved Display with 402x476 screen resolution Google Android based Wear OS operating system with Qualcomm Snapdragon Wear 3100 & Ambiq Micro Apollo3 Wireless SoC processor Workout Mode: Fitness Run|5-Min Workouts|Fat Burn Run|Outdoor Walk|Outdoor Cycling|Swimming. Water resistance - 5ATM 430mAh lithium Polymer Battery | 21 days of Battery Life | VOOC Flash Charging Built in GPS | Google Assistant |Heart rate monitoring |Sleep monitoring |Get Up Reminder|Guided breathing exercises