Features：
1. Life size, each step of catheterization can be practiced
2. Precise anatomical structure, convenient observation
through transparent shell
3. Lifelike appearance, urethral canal length 18-20cm
4. When catheter passing pubic bone, red light flashing
and with buzzing sound
5. When the catheter reached the internal urethral
orifice, the yellow light flashing and with buzz sound.
6. After catheter enter urethra about 20cm and reach
bladder, green light flashing and “urine” flow out from
catheter