Check the listing for details. Fitness Tracker HR Model Y1 Activity Tracker Black- (Purple). Color: Purple, Condition: New other (see details). Listed at 13.99 USD. Smart Fitness Tracker Monitors Your Heart Rate, Monitor Your Daily Fitness Level, Work Towards a Healthier Lifestyle!IMPORTANT NOTE:The device requires to connect with smart phone or iPad.Bright Colored Display0.96-inch TFT technology, Updated high definition, more thoughtfulness and polish, let the bracelet health and fashion coexist.Dynamic Heart RateFitness tracker monitors dynamic your heart rate, uploading the real time data of heartbeats to phone app.Better Life with♡Heart-Rate Monitor♡Sleep Tracking♡Call, SMS & SNS Reminder♡Color TFT display♡Camera control♡Reminders to Move♡4 sports modes: walk, run, hiking, CyclingEasy to ChargeDesigned energy-efficient chips, longer working time, easier tocharge with any USB port or computer, one full charge less than 2 hours and lasts 7 days . When charging, make sure you put the right side, the charging function is only available at the lower end of the dial. Try the front and back sides, the metal piece facing forward or backward and plug in a different socket to see if it can be charged properly.