20 PCS Y01 Student Exam Electronic Watch Backpack Hanging Watch with Keychain, Random Color Delivery, Style: Triangle1. Material: ABS2. Power supply: contains an AG3 button battery3. Display type: LCD digital liquid crystal4. Function: display time (hour, minute), display date (month, day)5. Movement type: electronic6. Waterproof grade: not waterproof7. Applicable scenarios: studying for exams, working and going to work to see the time, etc. 8. Features: exquisite and compact, easy to carry, wear-resistant and fall-resistant, comfortable to the touch, with hanging buckle, can be hung on the school bag9. Note: The time is displayed in 12-hour format10. Single weight: about 13g11. Single size: sleek model is about 6. 5x2. 5x1. 2cm, triangle model is about 5. 2x2. 2cm