From Baby Brezza, this bottle warmer features: Warms with only hot air, so there is no bacteria or scale build-up inside.  Bottles are 100% dry when finished Same technology used in hospitals Safely warms breastmilk or formula. No Hot Spots: Gently rocks the bottle during warming to ensure even warming without hot spots or air bubbles Only 1 F temperature difference between the top and bottom of the milk during warming process vs 21 F for other warmers. Safely Warms Breastmilk: Warms breastmilk without overheating, protecting nutrients, unlike traditional warmers that use steam heat which ruins breastmilk. Warms Precisely & Easy to Use: Choose precise warming time based on # ounces, milk type & bottle material using Gentle Tap-Touch buttons just lightly tap, no need to press Warmer counts down on LCD Display, beeps & then auto shuts-off when finished. Works with most brands and types of bottles (excluding bottom vented bottles). Includes 2 rings that hold narrow neck and wide neck bottles 1-year limited warranty (not valid if shipped outside the US). Works with most brands and types of bottles (excluding bottom vented bottles). Includes 2 rings that hold narrow neck and wide neck bottles Warms with only hot air not water so there s no bacteria or scale build-up. Bottles are 100% dry upon being warmed up. Only 1 F temperature difference between the top and bottom of the milk during warming process vs 21 F for other warmers. Choose from 4 temperatures (80 F, 98 F, 103 F for formula and water or 99 F for milk storage bags). Safetly warms breastmilk without overheating, or damaging nutrients. Choose your warming time based on # ounces, milk type and bottle material. Works with virtually all bottles. Includes 2 rings that hold narrow neck and wide neck bottles Dimensions: '7.1 L x 6 W x 8 H 1-year limited manufacturer's warranty Imported.