Specification:<br /> <br />  Material: ABS, Acrylic &amp;amp; Nylon<br /> <br />  For 20-36mm tube<br /> <br />  Input Power: 100mW<br /> <br /> Description:<br /> 5 red Led light modes: quick blink, slow blink and continue light<br /><br /> 2 laser lights remind someone else of keeping distance, add safety<br /><br /> Waterproof, safer in water fog when riding in the rain<br /><br /> Suitable for student, stroller,jogging, walking, bicycles, car emergency, horse&amp;ndash;riding, road emergency&amp;amp;camping,ETC.<br /><br /> Battery: 2 x AAA batteries<br /><br /> Power Working: about 9-36hours<br /><br />  <br /><br /> Package Includes:<br /><br /> 1 x bicycle rear light<br /><br /> 2 x AAA batteries<br /><br />  <br /><br /> Kindly Note : Do not look directly at laser lights