0.96 inch TFT color touch screen, high-definition screen, easy to read all fitness data.Record heart rate and blood pressure, monitor sleep status.Need to download app in your smart phone and switch on Bluetooth of your smart phone to connect the fitness bandUnder this interface, you can record the calories and duration of running. Skipping rope mode, sit-up mode, sleep mode, Information mode etcNot for swimming or diving, standby time: 3 days & above, this product uses professional Bluetooth RF signal and custom algorithm