Bluestone Fingertip Pulse Oximeter<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Oled display with 4 display directions， easy to Use， one button operation </span></li><li><span class="a-list-item"> Measures blood oxygen levels and heart rate， includes protective case with Lanyard </span></li><li><span class="a-list-item"> This is not a medical device </span></li><li><span class="a-list-item"> Requires 2 AAA batteries (not included) </span></li><li><span class="a-list-item"> Dimensions: length: 1.5 inches， width: 1.3 inches， height: 2.5 inches </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41X8iXElNqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51UuEQMvU6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41dQwCmnbHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51TiRSjKSwL.jpg" noproxy>