Description: Support system: applicable to iOS 9.0 and above, Android 5.0 and above. Watch languages: Ukrainian, Russian, German, Italian, Japanese, French, English, Portuguese, Spanish, Arabic, Korean Application languages: Russian, German, Italian, Japanese, French, English, Portuguese, Spanish, Arabic, Korean, Thai Operation mode: touch button Power on: Press and hold the function key. Screen size: 1.4 inches. Compatible operating system: Android, IOS Standby time: 4-7 days of normal use Functions: exercise, message, alarm, date, heart rate measurement, sedentary reminder, sleep management, time Alarm type: vibration 1. Support most smartphones above iOS 9.0 and Android 4.4: By downloading and installing a free APP, connecting the smart watch to the smartphone, you can get news and quick information, such as calendar reminders, text messages, incoming calls, and SNS (Facebook, WhatsApp, LinkedIn, Instagram, Twitter, etc.). You will not miss anything important. 2. Fitness tracker and more practical tools: support walking, running, cycling, fitness, yoga. Accurately record all-day activities, such as steps, distance, calories burned, distance walked, and active time. It has a 1.4-inch (about 3.6 cm) touch screen that can vividly display your exercise data. This smart watch also has many useful tools, such as alarm clock, stopwatch, timer, music controller, sedentary reminder, adjustable brightness. 3. Sleep monitoring: Comprehensive analysis of sleep quality (deep sleep, light sleep and wake-up time) to help you develop a healthier lifestyle. Long battery life: watch. Large capacity provides greater resistance. Normal use for 8 days, standby for 30 days. Packing list: 1 * Smart watch 1 * Manual 1 USB data cable