Smart bracelet MK66 Bluetooth call IP69 health monitoring super long endurance sleep monitoring sports watchproduct Function Step, movement distance, calories, detect the heart rate, blood pressure, blood oxygen detection, weather forecast, speech aides, bluetooth phone, bluetooth music and movement patterns and SNS message to remind, sleep detection, stopwatch, timer, alarm clock, breathing training, find the mobile phone, sedentary remind, intelligent alarm clock, female physiology, games, etc packaging One box quantity 50 pcs One box weight 7. 5kg Single