**Product Specifications:**
**Brand:** Beienshi
**Focus:** High quality, one-year replacement within one year of purchase, only replacement for damage within one year of purchase, customer responsible for shipping costs
**Features:**
- Silicone buttons
- LCD screen with no flicker, suitable for children's eyes
- Blue light-free large screen with clear sound
- 20 million + question bank
- 23 difficulty levels
- Customizable "wrong question book"
- 4 timing modes for automatic correction
- Volume limited to ≤85dB
**Math Training Levels:**
- Levels 1-6: Basic addition and subtraction
- Levels 7-19: Intermediate addition, subtraction, multiplication, and division
- Levels 20-23: Advanced math operations
**Training Modes:**
- Beginner, Intermediate, Advanced, Expert
- Intelligent question generation and automatic correction
**Game Modes:**
- Memory, Find the Largest, Find the Pattern
**Dimensions:**
- Product: 68mm (L) * 20mm (W) * 150mm (H)
- Packaging: 105mm (L) * 40mm (W) * 170mm (H)
**Design Philosophy:** Focus on the needs of young parents, providing high-quality, high-tech, and aesthetically pleasing products and services
**Brand Mission:** Carefully nurture and grow with families, allowing them to enjoy the beauty of parenting.
