Purchased on Amazon but never used. Description states that it will Fast Warm 4oz in 3-5 minutes. Rechargeable Battery with cordless design. Suitable for most kinds of bottles (Dr. Brown's, AVENT, NUK, Evenflo, Rihcell, MAM, Comotoco, Hito, Spectra, Lansinoh, Chicco, Combi, Us Baby, etc.) and comes with two adapters.