For those who are looking for a light， wearable fitness tracker， we highly recommend you this Tiantian Bluetooth Smart Fitness Wrist Band Bracelet for Android !#!amp!*! iOS Phone! It helps you promote a healthy lifestyle in a totally smart and convenient way. Inbuilt with pedometer， it keeps track of your daily activities and calculates calorie burned. Even better， you can set your own fitness goal and share your progress with friends via the dedicated app. Sleep monitor analyzes your sleep quality， letting you know your sleep patterns. Moreover， it delivers notifications of incoming calls， text messages， alarm， and events to your wrist and alerts you with subtle vibrations so you won’t miss any important things any more. Don’t miss out!                                    Features             Work as a light， wearable fitness tracker<br> Help you promote a healthy lifestyle in a totally smart and convenient way<br> Inbuilt with pedometer， keep track of your daily activities and calculates calorie burned<br> You can set your own fitness goal and share your progress with friends via the dedicated app<br> Sleep monitor analyzes your sleep quality， letting you know your sleep patterns<br> Deliver notifications of incoming calls， text messages， alarm， and preset events to your wrist and alert you with subtle vibrations<br> Support auto upgrade of APK and Bluetooth firmware as well as app data sync<br> Sleek and colorful design， stay comfortably on your wrist<br> Compatible with Android smartphone and iPhone， work with Android 4.3 or higher and iOS 7.0 or higher <br>                                                            Specifications             Wrist Clasp Material     Aluminium Alloy    <br> Wrist Strap Material     TPU    <br> Color     Pink    <br> Waterproof Level     IP67    <br> Operating Temperature     -10℃ to 50℃    <br> Battery Capacity     40mAh    <br> Battery Type     Lithium Polymer    <br> Adjustable Length     6.18" ~ 8.07" / 15.7cm ~ 20.5cm    <br> Operating System     Android and IOS    <br> Band Length     8.86" / 22.5cm    <br> Synchronous Type     BLE 4.0    <br> Dimensions     (8.86 x 0.71 x 0.39)" / (22.5 x 1.8 x 1)cm (L x W x H)    <br> Weight     1.06oz / 30g     <br>                                                             Package Includes            1 x Smart Bracelet<br>1 x User Manual<br>1 x Cable<br>