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Every button on toy have their functions. It can practice children's imagination， finger power， hand-eye coordination and also bring pleasure.Features:Mini size， lightweight and durable.37 keys electronic keyboard.1 power button to control turn on and turn off.1 tone button for controlling 3 tones of electronic organ， accordion and piano.1 volume button for switching high and low volume.1 tempo button for switching fast and slow tempo.1 effect button for controlling 2 sound effects of normal electronic organ tone and prolonged tremolo.1 demo one button for a demo playing.1 demo all button for 24 demos playing.1 lesson/rhythm button for practicing and accompany playing of 8 rhythms.1 stop button for stopping temporal playing.1 speaker offering loud， clear and melodious sound.1 installable microphone connecting with keyboard and sound coming out from speakers.1 groove on the back of keyboard for storing microphone conveniently. Practice children's music talents， imagination and also bring pleasure.Specifications:Material: PlasticColor: BlackFunction: EducationalToy Type: ElectonePower Supply:4 * 1.5V AA Batteries (Not included)Item Size: Approx. 33 * 10.5 * 4cm / 13 * 4.1 * 1.6inItem Weight: 308g / 10.9ozPackage Size: Approx. 34 * 11 * 5cm / 13.4 * 4.3 * 2inPackage Weight: 373g / 13.2ozPackages List:1 * Electone1 * Microphone Toy