Features：
1. Life size, realistic appearance and texture, urethral canal length 18-20cm
2. Control box monitoring the whole process of male catheterization
① When catheter passing pubic bone, red light flashing and with buzzing sound
② When the catheter reached the internal urethral orifice, the yellow light flashing and with buzz sound.
③ After catheter enter urethra about 20cm and reach bladder, green light flashing and “urine” flow out from catheter, about 200ml
3. Bladder irrigation