Features:
1. Adult arm, realistic blood vessels, including cephalic vein, basilic vein, median cubital vein, median forearm vein and dorsal hand vein network
2. Skin and blood vessels are replaceable
3. Venipuncture
* transfusion, blood sampling, etc.
* Realistic feedback, correct puncture with a sense of empty, has blood backflow
4. Intramuscular injection to the deltoid muscle
5. Subcutaneous injection: lower margin of deltoid
6. Left or right hand are optional