Product Dimensions: 5.5 x 3.6 x 1.5 inches. Item Weight: 5.9 ounces. Batteries: 1 Lithium Polymer batteries required. The calculator, timer, flashlight can cater to their various needs while role-playing gaming. Encouraging toddlers and kids to learn and discover. Children can Choose kinds of Big head stickers to take photos and share the funny pictures with family and friends. The device also features a high-quality speaker that supports a 3.5mm headphone jack, so kids can learn and enjoy music. Effectively exercise their training fine motor skills, thinking ability and interactive skills, improve hand-eye coordination and reaction skills while playing games. In addition, the anti-addiction mode allows parents to effectively control the children&#######x27;s daily game time. High quality ABS plastic makes sure the safety of Kids.