YK03 Smart Watch System requirements: Android 6.0 and above, I0S10.0 and above Support Bluetooth 5.3 Screen display 1.83 inch Battery capacity 300mAh Standby time 35 days or so Working time 7-10 days or so UI language, APP support language, watch font language: English, German, French, Italian, Spanish, Portuguese, Japanese, Polish, Russian, Simplified Chinese, Ukrainian, Korean, Arabic, Traditional Chinese, Thai, Hindi, Vietnamese, Turkish, Dutch, Romanian, Indonesian, Czech, Hungarian Body Material: PC+ABS Strap material: liquid modified silicone strap or steel Product Size(mm): 48x44x13mm(mm) /1.89 inch x 1.73 inch x 0.51 inch DESCRIPTION Ultra-long battery life and efficient standby: Built-in 300mAh high-capacity battery, the smartwatch can achieve up to 35 days of standby time while maintaining 7-10 days of continuous working time, no need for frequent charging, to meet the needs of long-time outdoor activities and daily wear. Comprehensive health monitoring: Integrated heart rate and blood oxygen saturation monitoring function, real-time tracking of your health status, whether it is high-intensity exercise or daily relaxation moments, can provide you with accurate data support, guarding your physical and mental health. Advanced waterproof design: With excellent waterproof performance, you can wear it safely when washing hands, in rainy days or swimming, making the smartwatch your all-weather health and life partner. Multi-functional integration experience: not only supports Bluetooth 5.3 high-speed and stable connection, but also integrates Bluetooth call and torch functions, whether it is an emergency call or night lighting, it can be easily dealt with, and improve the convenience of life. International UI and language support: Provides support for more than 20 languages including English, Simplified Chinese, Japanese, etc., covering the world's mainstream language zones, with a clear and intuitive 1.83-inch screen display, ensuring that every user can have a smooth and personalised experience. Plus a choice of liquid-modified silicone or steel straps, combining comfort and style for different occasions and personal preferences. Product List Watch *1, colour box *1, manual *1, charger *1