Smart Watch for Men, Answer and Make Calls Bluetooth Watch, 1.32'' Fitness Tracker Watch with Heart Rate Blood Oxygen Sleep Monitor Step Counter, Waterproof Smartwatch for iOS Android Phones(2 Straps)

Good product for money unsure on monitoringOf sleep or heart rate ETC as there is no way of telling unless you hooked up to proper machines as all ways battery could last longer but 2-3 days isn't bad.

For the price i got what i was looking for, a smartwatch that has all the basic features. a few issues but are being resolved by the seller

Battery life is too short