Features：
1. Adult buttock, precise anatomical structure
2. Both sides are suitable for injection practice, realistic
texture
3. Electronic monitoring, indicating injection position,
depth by LED lights and sound alert
4. Zipper setting
① Battery jar
② Zipper
③ Injection error area (bilateral)
④ Inject the correct area (bilateral)
⑤ Apex of iliac spine (bilateral)
⑥ Green light (indicating that the injection range is correct)
⑦ Red light (indicating that the injection range is wrong)
⑧ Anterior superior iliac spine (bilateral)
⑨ Gluteal sulcus (bilateral)
⑩ Apex of gluteal cleft (bilateral)