Lintelek Fitness Tracker HR, Activity Tracker with Step Counter, Heart Rate Monitor, Smart Watch with Sleep Monitor, Extra Replacement Band for Men Women Kids (Grey+ Black)

【DAILY ACTIVITY TRACKING】Lintelek fitness tracker tracks your daily stats: steps, distance, active minutes and calories burned. 14 exercise modes, you can choose whatever you like to help you exercise better. 【REAL TIME HEART RATE】Heart rate monitor adopts the latest HR sensor to track your heart rate continuously and automatically. The heart rate monitor sensor will emit green light, our blood absorbs light at a specific wavelength. HR data will be recorded on the app for you to see. 【SLEEP MONITOR】 Our activity tracker automatically tracks your sleep and analyze your sleep quality with light sleep, deep sleep and awake time. The silent vibration alarm can wake you up without disturbing others. 【NEVER MISS CALL & MESSAGE】 See Calls and Messages on Your smart watch. Received call, calendar, SMS and SNS (Facebook, WhatsApp, Instagram, and Twitter ) notifications on display, never miss important messages. 【24-HOUR CUSTOMER SERVICE】We love our customers. Please email to us without hesitation when you have any questions about our fitness tracker. We provide consumers with a one-year !