Due to the multiple functions and high power consumption of this product, it is necessary to use batteries with a higher power level to make all lights turn on. Otherwise, cool colored lights may emit relatively weak light.   SPECIFICATION: Name:Busy Board Toy Color:Yellow/green/blue/light red Recommend Age : 3+ Battery: 2 AAA (not included) Product size:15.5cmx12.5cmx6cm/6.10inchx4.92inchx2.36inch FEATURES: 【LED Busy Board】: Mini busy board with various switch to control lights in different colors by key control that makes toddlers fascinate. 【Skill Development】: This educational toy is designed to enhance children’s hand eye coordination, color recognition and cognitive development. 【Great Gift】: This Montessori Busy Board is a great birthday or holiday gift for kids. 【Material】: This led switch board is made of material to ensure long term use and withstand rough play from young children. PACKAGE LIST : 1 Montessori Busy Board Note: Please allow slight dimension difference due to different manual measurement