The smartwatch comes with 2 straps that can be charged depending with the occassion

Fitness Tracker: Heart Rate Monitoring, Blood Pressure and Oxygen Monitoring, Sleep
Monitoring (Time and Quality).

Details can be read in the APP.
Multi-sports mode includes running, walking, step recording, calorie tracking, and distance monitoring.
Details can be read in APP.
Call reminder (Caller ID displays) /Information Reminder (Vibration Reminder) .
Push Notifications (including SMS, Facebook, Twitter, Skype, WhatsApp etc.)
Stopwatch, Camera Remote Control, Bluetooth Music Control, Screen light adjustment,
Sedentary Reminder, Multi-Watch Faces.

More functions include alarm reminder (three alarms could be set), sedentary reminder, flip
screen, do not disturb mode, anti-lost.

Clock, steps, heart rate, and calories are displayed on the same page of the screen for easy reading.
1.69 inches Big HD IPS Full Touch Color Screen: 320x240.

Multi dials for selection.
Bluetooth 4.0(low power consumption).Support IOS 9.0 version above and Android 4.4 version
and above.

Built-in 180mAh battery, working time is about 5~8 days. (The actual time depends on whether
the screen is always on and how often the detection function is applied).

Water proof: IP65

What's in the box
1 x Watch (with 2 straps)
1 x Charging cable
1 x Instruction manual