Baby Brew Bottle Warmer. Used 3 times until breast feeding ended. The Baby’s Brew portable bottle warmer requires no outlet to heat up your baby’s milk and comes with four adapters making it compatible with over ten popular bottle brands. It's easy, convenient, and safe for breast milk or formula. The adjustable temperature function allows you to choose the best suitable temperature for your baby's needs while our digital display keeps real-time temperature readings as it warms. Unique slow-heat technology preserves the nutrients in your milk while also ensuring no dangerous hot spots develop so you can feel confident warming bottle after bottle.