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People looking ahead when they are moving, simple eye's perspective is around 160-175 angle.Eyes' perspective can be able to 200 angle.
Sometimes people looking at dashboard and cellphone while they riding scooter, accident usually happen in the second, LUD is a
screen paste on the helmet in front of your eye, you can see the speed, time, and map... on LUD without look down.
Ja,jun Liou Nai,Yun Chang Yu,Ping Chao