Material: alloy, silicone, steel, electronic components Functions: multiple sports mode tracking, heart rate/blood pressure/blood oxygen monitoring, breathing exercise, dialing/information reminder, sleep monitoring, video entertainment, smart reminde Screen size: 3 inches (AMOLED high-definition screen Menu language: Simplified Chinese, Traditional Chinese, English, German, French, Spanish, Korean, Japanese, Russian, Portuguese, Italian, Ukrainian, Arabic, Polish, Persian, Thai, Burmese, Vietna