• Check the car brake oil quality
• 5 LED lights display the percentage of moisture content in brake fluid
• Auto power off

• Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode, high moisture content will lead to lower boiling point, affect braking performance. Red indicates the brake fluid needs immediate replacement, green represents good condition, yellow indicates the state is acceptable but soon replaced
• 1, The green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified
• 2, The yellow LED lights = brake fluid water content H2O = 1.5% to 3%, can continue to use, test again six months later
• 3, The red LED lights = water content in the brake fluid H2O> 3%, can not continue to use the brake fluid needs to be replaced
• Red LED: change brake fluid
• 4, LED red flashing: battery replacement
• 5, LED yellow: low moisture content, check again in six months
• 6, LED green: brake fluid lines / cell row

1.We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW.2.Payment must be made within 3 days of order.3.If you can't checkout immediately after auction close, please wait for a few minutes and retry Payments must be completed within 3 days.    

1.We guarantee to ship goods out within 24-72 hour after payment confirmation except holiday.2.We ship by China post,HKpost EMS,DHL,Fedex,according to your choice when placing orders .3.If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem.4.We are not responsible for delays causedby the customs,Import duties,taxes or other customscharges. 

1.All items have 1 year guarantee.IF your purchase do not meet merchantable quality, fitness for purpose or match the description, We can make sure your issues are resolved .2.For wrongly-shipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment.3.For defective or faulty products,please take photos or videos,we would resend or refund after confirmation. 

1.We maintain high standards of excellence and strive for 100% customer satisfaction!Feedback is very important.2.We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.3.It is impossible to address issues if we do not know about them! So please contact us for any problems.Thank you!