Material: Alloy <br />Battery: One CR2032 battery (included in watch)<br />Case Size: 4.3 x 2.5 x 1.3 cm<br />Band Length: 18-22 cm<br />Screen: Two rows LED lights for time display<br />Function buttons (right-side): Top (hour and date display + select) Button (change mode)<br />Daily Water Resistant (not for swimming or showering): Yes<br />Color: Black with Red LED <br />Settings: Time， Date， Seconds (Watch looks like a common metal bracelet at normal condition， time will be displayed just like lava while LED is lighting)