Wakamaru recognizes approximately 10,000 words necessary for daily life, recognizes its owner and his family and speaks to them on appropriate topics. Needless to say, Wakamaru will respond to you also based on information he gets from your daily life, identifies two owners registered by face recognition and eight other persons, faces you when it speaks, and incorporates body gestures into his conversation. It recognizes the name given to him by its owner and can adjust the volume of his voice.

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