The milkymeter measures the temperature of milk in a baby bottle while being warmed in a microwave. This avoids an overheating of the milk and prevents a loss of nutrients. The minimalist thermometer is waterproof and airtight, thus allowing the use of the electronics in the microwave. An easily read signal light gives a clear indication of the temperature. The milkymeter uses new Microweter technology, which converts microwaves into electricity and thereby makes it possible to take real-time temperature readings without a battery or cable.