The Baby Brezza Safe + Smart Bottle Warmer is the only bottle warmer with Bluetooth and 2 heat settings to safely & evenly warm breast milk, formula and baby food jars in minutes. One setting is Steady Warm, a warm water bath that safely warms or defrosts breastmilk and preserves its nutrients (unlike most other warmers that use steam heat that destroys breastmilk proteins). The other warming setting is Quick Warm, which uses steam heat for rapid warming of formula or baby food. You can use the FREE Baby Brezza app and Bluetooth to operate the warmer and receive alerts when your bottle is ready so you don’t need to babysit your bottle. The Safe + Smart Warmer fits all brands and sizes of bottles, most storage bags (frozen or thawed) and plastic/glass food jars. It’s easy to use – just choose your setting and the warmer does the rest, shutting off automatically when finished.