Intelligent Primary School Student Writing Sitting Posture Corrector Children Eye Protection Vision Protector Student Alarm Clock(Sky Blue)

1. Weight: about 150 grams
2. Size: about 8x8x8 cm
3. Material: Plastic
4. Battery capacity: 1200mAh
5. Functions: sitting posture correction reminder, intelligent voice reminder, intelligent light control reminder, sedentary fatigue reminder, real-time distance detection, time management
6. Features: anti-myopia and anti-humpback, no sense of restraint, light reminder, easy to carry, no need to install, free placement, simple and convenient to use, universal USB data cable for charging