Bluetooth-compatible call & Bluetooth-compatible music control & Bluetooth-compatible camera: The watch supports Bluetooth-compatible calls, Bluetooth-compatible music control and Bluetooth-compatible camera function, bringing more convenience HD large screen: 1.43" AMOLED high-definition resolution (466 * 466) display screen, gives you a larger and clearer visual experience Health monitoring function: 24-hour continuous heart rate, 24-hour precise sleep monitoring, red blood oxygen, HRV, Lorenz scatter plot, METs, female health, blood sugar, respiratory training, stress testing function Practical functions: 100+ sports mode, small games, timer, calculator, voice assistant, flashlight, split screen UI, etc. Specifications: Function Bluetooth-compatible call, Bluetooth-compatible music playback control, Bluetooth-compatible camera 24-hour heart rate monitoring, precise sleep monitoring, blood oxygen saturation monitoring, HRV, Lorenz scatter plot, Mett, reminders for predicting menstrual and ovulation periods, blood pressure monitoring, blood sugar, stress testing, respiratory training Temperature function Activity: Step count, calories, distance Information notification, weather, alarm clock, stopwatch, timer, flashlight, search phone, voice assistant, computer, mini game Sports modes: running sports, cycling sports, outdoor sports, dance sports, indoor sports, combat sports, ball sports, water sports, leisure sports, chess and card sports, etc; Do Not Disturb mode, APP download, multiple dial switching, turning the wrist to turn on the screen, turning the wrist to turn off the screen, brightness adjustment, switch settings, local time setting on the watch, constant on display UI language support Default languages (English): Chinese, Japanese, English, German, French, Italian, Spanish, Portuguese, Russian, Indonesian, Romanian, Arabic, Arabic Parameter specifications screen size 1.43-inch AMOLED resolution ratio 466*466 system requirements Android 5.1 and above, IOS 8.2 and above, supporting Bluetooth-compatible 4.0 Bluetooth-compatible version Bluetooth-compatible 5.3 master chip JL7013A Heart rate chip GH3018 G-Sense KX1057 Battery capacity 230mAh Body memory SRAM: 640KB + ROM: 2M External memory 128M standby time 10-15 days standby time 5-7 days Constant battery life 2 days Charging method Magnetic suction charging motor Built-in, vibration reminder material quality Aluminum parts+plastic   Watch size 43.7mm*11.8mm   Band Width 22mm APP/APK download method Android and for Apple Store Search: Hband Package included:1 x Smart Watch1 x Charging Cable1 x English User Manual