1. Material: ABS
2. Small and light
3. Removable metal keychain
4. Applicable age: youth (15-35 years old)
5. Non-marking frosted surface, not easy to reflect light, not easy to leave fingerprints
6. Unit weight: about 30g
7. Dimensions: pyramid keychain side length is 4.5cm, maple leaf keychain side length is 3.5cm, second-order keychain side length is 3.5cm, third-order keychain flat version side length is 3cm, gear keychain side length is 3cm
