Fitness Tracker 696&reg;SB-TW64 Bluetooth 4.0 Smart Bracelet Dynamic Heart Rate Monitor Wristband Pedometer for Android iOS Smartphone Bluetooth calling: Phone call reminder,Support caller ID Single Key: Short Click and Long Press Control Special Feature: Light on Wrist Up Health Tracker: Pedometer, Calories Counter, Distance, Sleep Monitor Other Functions: Alarm Alert, Time Clock, Anti-Lost, Phone Find, Anti-Lost