High Quality Plastic: Crafted from durable materials, this calculator withstands the test of time, offering reliability and longevity for your child's learning adventures. Built-in Lithium Battery: Enjoy extended playtime with our rechargeable calculator, boasting a battery that supports up to 30 hours of continuous use. USB-C Charging: Stay connected and charged with ease, using a standard USB-C cable (not included) to power up your child's favorite educational toy. Cute Bear Appearance: Attract and engage children with a design that combines education with entertainment, making learning a joyful experience. Educational Learning Toy: Foster a love for numbers through interactive games and tests that challenge and entertain, suitable for classroom and home use. Introduce the joy of mathematics to your child with our Mathematical Learning Calculator. Designed with a kid-friendly interface and long-lasting battery, it's the perfect blend of education and fun. Watch as their skills grow with each button press, turning everyday play into a learning opportunity.