Description:<br />This is a smart glass， through a set of LED lights， coffee， tea and other beverage temperature is clearly displayed on the Cup，<br />so that we can easily grasp the best serving temperature.(you should take off the small plastic in the battery before add water into cup，then the temperature light up)<br />All LED lights when the coffee cup in 0-45 \u2103 doesn't work， indicator light only as temperature detection， light off a sequence.<br />Every time the electricity or the cup built-in LED will light off at a time， in turn when detected normal water temperature corresponding leds light up.<br />Perfect for coffee，milk tea，milk，soy milk，honey and water.<br /><br />Features &amp;amp; details:<br />Material: Stainless Steel+ABS+Silicon<br />Color: Pink，Coffee<br />Size: About 8.5*11.5cm<br />Capacity: 280ml<br /><br />Package Included:<br />1pcs x Intelligent Coffee Mug (1pcs Button Battery)