991MS Function Calculator 401 Functions Double Line Display Test Using Equations Students Calculate Dark Blue

Product Description:

Display screen: Adopt Japanese LCD, font forced true, clear, thick black, no shadow.

Solar energy: using American photoelectric technology, photoelectric conversion efficiency is good, can provide sufficient power, more convenient to use.

Metal surface: use thickened aluminum material to achieve better protection.

Circuit board: corrosion resistant plate, good conductive performance, strong adhesion of carbon oil

Fast IC, fast operation speed, low energy consumption

Key : made of new raw materials and high quality silicone oil, feel more comfortable

Screw: use lacquer baking proce and pa salt spray test.

Bamma line: in line with European envmental standards.

on battery: no leakage of nickel metal hydride envmental protection battery, more powerful, long life.

Product bag: PE material

Color box: envment-friendly ink printing, polishing proce, instead of the traditional attached film, can be completely decomposed ar recycling

Packing: KA reinforced paper.

About shipping
Shipping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days ar buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties ores. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.