For people who live an active life， the W5 USB Multi-functional Smart Wrist Band Bracelet should be their first pick. With a simple， concise design， it integrates a variety of amazing functions. In-built G-sensor keeps track of your daily activities and calculates your calories burned with ease. Sleep monitor helps you know about your own sleep patterns. And it can display time， date， and even environment temperature for more convenience. This smart bracelet has a comfortable silicone band that fits wrists of different sizes. Charging and data sync has been so easy with its USB port. Need I say more? Bring it home and explore a lot more!                                    Features            Perfect for people who live an active lifeIn-built G-sensor keeps track of your daily activities and calculates your calories burnedGive a clear view of the accomplishment of your preset sports goalsSleep monitor helps you know about your own sleep patternsDisplay time， date， and environment temperatureComfortable silicone band fits wrists of different sizesData memory function lets you view your daily activities on a computerSupport USB charging and data syncSlim and lightweight， simple yet sleek curved designNote<br>1. Due to the different monitor and light effect， the actual color of the item might be slightly different from the color showed on the pictures. Thank you!<br>2. Slight color/pattern differences between batches.                                                            Specifications            Model    W5    <br>Color    Green    <br>Quantity    1 Piece    <br>Material    Silicone    <br>Touch Screen    No    <br>Step Count Accuracy    ± 5%    <br>Interface Type    USB Port    <br>Battery Capacity    50mA    <br>Run Barometric Pressure    860hPa ～1060hPa    <br>Range of Temperature Display    -10°C ~50°C    <br>Data Ransfer Mode    USB Port    <br>Steps Number    0-9999 Steps    <br>Power Supply Voltage    DC=5V    <br>Working Temperature    0-45°C    <br>Dimensions    (10.03 x 0.63 x 0.35)" / (25.5 x 1.6 x 0.9)cm (L x W x H)    <br>Weight    0.92oz / 26g    <br>                                                            Package Includes            1 x Smart Wrist1 x USB Adapter1 x User Manual