Shell: ABS<br />Strap: PU<br />Bottom cover / table back: stainless steel<br />Plastic， rubber strap<br />Built in battery life: normal use for one year or more (CR2032)<br />Waterproof: Waterproof clock mode， the use of 12 hours /24 hours.<br />Calendar with 2000-2099 years.<br />Users can self edit time.<br />Daily alarm.<br />Stopwatch， work time can be up to 9 hours and 59 minutes.<br />Total mileage and sports time.<br />Heart rate monitoring using heart rate chest.<br />Users can independently edit the heart rate<br />Alarm value.<br />7 days of memory (including) the same day， including total number of steps， total mileage， total calories， the maximum heart rate and the average heart rate.<br /><img src="http://img6.eachbuyer.com/x9/p100/eb01544_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb01544_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb01544_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb01544_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb01544_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb01544_6.jpg" />