1、Health monitoring: real-time heart rate measurement, blood pressure measurement, blood oxygen measurement. 2、Sports records: steps, exercise time, exercise mode (running, cycling, hiking, basketball, football), sleep monitoring. 3、Smart reminder: custom alarm reminder, call reminder, information push. 4、Designed for waterproof; can check the outdoor environment: altitude, ultraviolet radiation, atmospheric pressure. 5、Time display; custom the wristband ringing time. Features: Health monitoring: real-time heart rate measurement, blood pressure measurement, blood oxygen measurement. Sports records: steps, exercise time, exercise mode (running, cycling, hiking, basketball, football), sleep monitoring. Smart reminder: custom alarm reminder, call reminder, information push. Designed for waterproof; can check the outdoor environment: altitude, ultraviolet radiation, atmospheric pressure. Time display; custom the wristband ringing time. Specification: Condition: 100% Brand New Material: ABS Color: Black Compatible Operating System: Support for Android, for IOS Screen: IPS color display Screen size: 0.95in Waterproof: YES Battery Capacity: 130mAh Compatible OS: for Android4.4 and above, for IOS 9.0 and above Bluetooth Version: Bluetooth 4.0 Package weight: approx.78g Model: F4 Standby Time: 7-10DAYS Charging Time: about 2 hours Charge: USB charge Package List: 1 * Smartwatch 1 * USB charging cable 1 * Instruction manual