Product Specification: -Name: TPMS Relearn Tool -Material: ABS plastic & metal -Color: Orange, Black -Size: 6.1 2.36 1.38 inches -Weight: 300g -Packaging includes: 1 Tire Pressure Monitoring System Sensor Our product advantages: -Material: The shell is made of ABS, which is durable and not easy to crack or break.-Essential tools: Helps you reprogram all tires in 1-2 minutes.-Applicable: Suitable for most vehicles on the market.-Note: Please check the specifications of the reset tool before purchasing to ensure that it is suitable for your vehicle.Charger and battery are not included in the package.How to use EL-50448 relearn tool?1.Set the car in TPMS learning mode.(car horns twice) 2.Starting relearn process from left front tire, point antenna on correct position.Press & hold power button.Once the speaker chirped, move to the next tire.3.Follow this order to rest TPMS sensors: Front left, front right, rear right, rear left.4.After all sensors reseted, the car horns twice means TPMS re-learn finished.