running record swimming heart rate sleep waterproof Bluetooth sports bracelet

SPECIFICATIONS: Waterproof Grade: Life Waterproof Touch Screen: Yes Style: SPORT Screen Type: LED Screen Style: Rectangle/Square-shape Language: English Function: Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Alarm Clock,Chronograph,Blood Oxygen,Calendar,week,Heart Rate Tracker,Activity Tracker Band Material: Rubber Band Detachable: Yes