IFit VUE Activity Tracker Plum/Grey Bright OLED display. Quickly view stats for distance, calories burned, and steps. Built-in counter allows you to log your meals and check net calories (difference between calories in and calories out). MoveReady technology detects your specific types of movement patterns, but also knows when you switch activities. Vibrations and friendly messages remind you when it's time to move or wake up. Track length of sleep as well as light/deep sleep. Vue's message center lets you see text notifications and caller ID. Water resistant; perfect for swimming or running in the rain. Sync your data with the iFit app (log nutrition, set goals, access stats with easy-to-read charts). Two-tone, adjustable wristband. USB charger included. Compatible with any BLE chest strap (not included). Compatible with the iPhone 4s and later, iPod Touch 5th Gen and above, and Android 4.3 and above (not included). Battery: Lithium-ion; lasts up to seven days of continuous use. Model: IFACT115.