Features: 5-speed volume to meet all your needs. Simple operation, no need of network, small size and convenient carrying. Matching cards include animals, vehicles, articles, food, vegetables and fruits, characters/shapes/occupations, etc. The cards are colorful and rich in content, which can easily attract children's attention; It can not only help your children to recognize objects and recognize letters, but also help your children practice thinking and memory. Made of environmentally friendly materials, the edges are smooth and round, which is suitable for children to play without hurting their hands. Specification: Material: ABS, paper Dimensions: 107*90*21mm Color: Pink, Blue Suggested age: 0-3 years old baby Input voltage: 5V Input current: 270mA Rated power: 1W Battery capacity: 300mAh List: Card machine + a set of cards (56 double-sided, 112 types in total) + Chinese and English manual Full charge service time: 4h