100% brand new and high quality The mobile APP can set multiple alarms, and the watch will vibrate and brighten the screen when the time comes. Accurately record the length of sleep, scientifically analyze sleep conditions, judge deep sleep and light sleep according to changes in heart rate, provide sleep breathing quality scores, and let you sleep more at ease. Anti-fatigue driving mode impulse stimulation to provide driving concentration and prevent dozing off. The low-frequency pulse signal generated by the control of the microcomputer passes through the electrode of the human body,in a different sequence,simulate acupuncture to stimulate skin nerves, achieve refreshing, relieve motion sickiness and other effects. Raise your arm,you can see the synchronized moblie phone text messages, social APP information display content. Smart heart rate monitoring, follow your heartbeat 24 hours a day. Through light path design and multi-light source fusion, professional algorithm blessing, allowing you to accurately measure blood oxygen any time and anywhere,and fully understand your own health status. Material:TPU Watch Head Size: 3.9x3.85x1.15cm/1.53x1.51x0.45inches Watch Strap Size: 2cm/0.78inches Color:Black/Orange/Green Compatible with Lokmat Ocean 2 Wireless distance: 5m (inclusive) -10m (inclusive) Battery capacity: 100mAh Operation mode: touch + button 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. 1x Watch 1x User Manual