In general, it works. The Pulse measures approximately +-5. The pressure is very far. Oxygen is also approximately. The clock is configured through synchronization with the phone, through the app. Also checked for waterproof-you can swim under the shower, it's OK. Time, pulse, pedometer-for this cost is good. And look OK. So recommend.
Sports Health Wristband Bracelet Bluetooth Smart Watch - Global Version
Great little unit although the instructions are not clear on how to charge. Does all it says it owes so I’m happy