NEW Version 2.0 Supermama Portable Milk Warmer a smart warmer device that allow you to heat up your baby's milk precisely, safe & effortless. Portable & Wireless After full charge you can leave the cord at home and use the warmer whenever you want for up to 5-8hours! Optimal Heat Tech It gives you a more stable heat transfer and avoid over heating that could make your breast milk go to waste. Safe & Precise 4 temperature setting that allow you to choose the optimal temperature for your breastmilk, water, and liquid baby's food. Universal It fits most of wide neck bottles. If its not compatible with your model of bottle there are adapters to make the perfect fit. Talk to us if you have doubts! Product Specification: BATTERY: 8800MAH FULL CHARGE DURATION: 4HOURS USAGE DURATION: 5-8HOURS TEMPERATURE: 37C, 40C, 45C, & 50 CELCIUS INPUT VOLTAGE: 5V=2A&3A DIMENSION: 9CM X 7CM WEIGHT: 399G COMPATIBILITY: FIT WITH MOST OF THE WIDE NECK BOTTLE IN MARKET. WARRANTY: 12MONTHS Compatible WIDE NECK Baby Bottle Brand List (No Adapter needed): 1. AVENT 2. Supermama Storage Bottle 3. Combi 4. SpeCtra 5. Nip 6. Chicco 7. Autumnz Note: Glass bottles are not compatible with this bottle warmer without adapter.