Reflective Vest Traffic Road Administration Highway High Speed Light Release Hot Melt Embossing Fluorescent Reflective Vest Parts Boxes Its Vibration frequency changes between

Its Vibration frequency changes between 4 intensities will give you the right guidance

fast ADC / analog to digital converter

it is smooth and clear

【High-Quality Materials】This sunglasses are made of high-quality resin lenses and a metal frame that is durable enough for long time using and easy to clean

This device is able to display results in RPM or revolution count

Reflective Vest Traffic Road Administration Highway High Speed Light Release Hot Melt Embossing Fluorescent Reflective Vest Parts Boxes Its Vibration frequency changes betweenShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Packing List Reflective vest * 1