1、【Number Matching】: Unlike traditional digital educational toys, this digital lock toy allows kids to complete the recognition and learning of numbers in a whole new way. 2、【Durable and Safe】: The digital learning lock game is made of high quality ABS material, it is safe, non-toxic, durable and well made, fall-proof, wear-resistant, with long service life. 3、【Early Educational Toys】: The Study Locks can promote early math sorting skills and recognize the number and alphabet. Children can develop good motor skills through practical assignment and activation games. 4、【Best Gift】: The unlocking toys are great fun and can pamper your child for hours. It's also an excellent interactive game that fosters connection between parents and children. 5、【Package Included】The set includes 3 locks and 3 keys. The front and back of the lock are numbers and vehicle patterns, and the front and back of the key are numbers. Material: ABS Size (approx.): Lock head: 7*4*9cm Key: 3.5*7cm Packing size: 13*8*10cm Weight (approx.): 220g 3 x Locks Toys 3 x Keys