This magical mood light comes with a free keyring version to keep with you at all times. The larger one gives you great mood lighting around your home while the keyring version will help light the way on those dark nights. The large version requires batteries, but the keyring has batteries included. Battery or Micro USB powered (not included). Includes Mood light & mini keyring version. Batteries required: 3 x AAA (not included). Size H25, W13, D10.5cm. For ages 14 years and over.