This smart watch has a built-in heart rate monitor, pedometer and more. This watch is compatible with the iPhone 7/7 Plus, iPhone 6/6S, iPhone 5/5S/5C, iPhone 4/4S, iPad, iPod Nano 7, iPod Touch 5, iPod Nano 6, Samsung Galaxy S5/S4/S3, Note 3, Note 2, Note 4, Note Edge, Xperia Z3/Z3 Compact/Z2, Moto X/G/E and HTC One/M8/M9.
This is how the smart watch works: 1. Download the Gear Geek app from the Apple store (https://itunes.apple.com/us/app/gear-geek-rowatch-smart-watch-for-iphone/id1160236890?mt=8) or Gear Geek Play (https://play.Gear Geek.com/store/apps/details?id=com.Gear Geek.rowatch) 2. Plug the watch into a charger and wait for approximately 10 minutes for it to charge before using it 3. Download the Gear Geek app to your mobile phone and sync your smartphone and the watch together via Bluetooth 4. Download the Gear Geek app to your Fitbit (https://play.Gear Geek.com/store/apps/details?id=com.Gear Geek.rowatch&hl=en) or Apple Watch