KAVVO Oyster Urban Smart Watch, Luminous Smart Watch with Mechanical Rotating Bezel, Local BT Call, Activity Fitness Tracker, Blood Oxygen Heart Rate Monitor Features: The world's first luminous smart watch: KAVVO Oyster Urban Watch is the world's first smart watch that uses luminous technology, which can be more convenient to time in dark environment. The ingenious surface design and blue luminous decorative effect form a seamless visual feast. Handmade stainless steel and magic crown: SUS316 stainless steel undergoes more than 30 processes, and is finally polished and filled manually by a watchmaker. The leather mixed strap has the functions of anti-tension, anti-scratch, bacteriostasis and perspiration. It can prevent the damage of most natural water bodies (sweat, seawater, pool water, rainwater, muddy water). More than 20 exercise modes are available, and the duration of each exercise, heart rate and calories burned are recorded. Heart rate, blood oxygen and sleep are monitored in real time for 24 hours to pay attention to your health problems in real time. BT calls make your life easier: Handsfree, easy to answer/answer/reject when needed. Easy to wake up voice assistant: set alarm clock, play music, and ask about the weather. Specifications: Item: Smart Watch Display: 1.32inch 360*360 Support: Android 7.0 and above, iOS 12.0 and above Package Size: 11.9*8.5*5.9cm Package Weight: 125g Package List: 1* Smart Watch