It's difficult to get a dentist appointment in space, so aspiring astronauts need to take care of their teeth. The Jett the Rocket toothbrush makes brushing easy. The flashing lights and the 2-minute countdown with the two-stage flossing bristle brush ensure top performance and a successful tooth brushing mission. With its small brush head and lightweight handle, this toothbrush is perfect for making your child's brushing routine unique. The DeepClean bristles are especially suitable for mixed teeth. The short bristles clean the tooth surface, while the longer bristles clean between the teeth. The toothbrush is powered by a AAA alkaline battery, which is included (please use only alkaline batteries). Vibration frequency: 15,000-25,000 vibrations per minute.