Production Description:
1: PACKAGE: includes 4 pcs pregnancy wheel, diameter is about 5.11 inch.
2: MATERIAL: Made of durable plastic ABS material, with rotatable small wheels.
3: DESIGN: Designed with printed days, weeks and months for calculating lead times, to efficiently predict the approximate date of delivery.
4: FEATURE: Simple and easy to use, by rotating the wheel, dragging and move the pointer to select LMP.
5: APPLICATION: Suitable for people who is having pregnancy concerns for OB-GYN, Gestation Wheel Calculator, midwives, nurses, patients doctors and moms.

Package Included:
4 Pcs Pregnancy Wheel