Details The SmartFit Slim that works with all iPhones; Samsung Android phones and many other devices.This is a slimmer; lighter version of the health monitor watch that monitors your activity; sleep and much more. It also has an alert function that will notify you by vibrating when you receive an incoming call or text message. Featuring an OLED screen; the watch face is bright and clear in any light. The band is made of silicone and includes a metal button lock. Also features call and Bluetooth