Compared to the popular KW850 under the KONNWEI brand, we have added the reset function of the battery tester and maintenance lamp, KW890 is also a digital battery tester for 12V lead acid car, SUV, light truck batteries. Features: SAVES MONEY AND TIMEThe KW890 car computer reader is a professional vehicle diagnostic tool for Read Stored Codes,O2 Monitor Test,Clear Trouble Codes,On-board Monitor Test,Read Freeze Frame,Component Test,Read Date Stream,Vehicle Information,I/M Readiness,Lookup Diagnostic Trouble Codes,Evap System,Battery Voltage Test NOT ONLY TURN OFF THE CHECK ENGINE LIGHT Unlike other cheap car diagnostic scanners, KW850 OBDII code reader covers full OBDII/ EOBD diagnostic functions for engine system. O2 sensor test, EVAP systems test, and on-board monitoring test give you full control of your vehicle's running status, while a graphical and numeric live data stream display will help you to find out the faulty sensor readings. (Please be noticed: this function is for ENGINE System only). BEST IN THE MARKETKW890 code reader car diagnostic tool is coming with the user friendly diagnostic interface and optimized software algorithm, it makes diagnosis 2-3 times faster than other OBD2 scanners. Featuring 2. 8'' LCD color screen and graphical real time sensor analysis, may help you fast identify faulty readings in seconds. Extra-long (59') diagnostic cable coming in the package, allows you freely diagnose your cars even outside of vehicles. UNIVERSAL COMPATIBILITY AND EASY TO USESupports all OBDII protocols,for All Vehicles after 1996 years,IISO 9141, KWP2000, SAE J1850, CAN, J1850 VPW, J1850 PWM. The battery detection section can detect as long as it is 6-12V lead-acid batteries. Global models are produced after 1996.Simply plug into the OBD II port on your car, turn the ignition on and you are ready to go. No battery or complicated apps install needed. Specifications: Model: KW890 Item name: Car OBDII Diagnostic Scanner& Car Battery Tester& Car Oil Service Light Reset Screen: 2.8inches colorful Screen Language: English,French,German,Italian,Spanish,Russian,Poslish Product Dimensions:20*10*3.5cm Package size:25.5*18.5*7cm Package weight:905g Special Features:ISO 9141, KWP2000SAE J1850 CAN J1850 VPW,J1850 PWM ,for 6-12V lead-acid batteries,for all vehicles after 1996 years. Application 12V OBD2 & 1 cars, light truck, sedans, SUV Main functionRead and erase fault codes, read live sensor data, display datastream, DTC lookup, troubleshooting code tips Special function: Oil Reset This function allows you to perform reset for the engine oil life system, which calculates an optimal oil life change interval depending on the vehicle driving conditions and climate. This function can be performed in the following cases: 1. If the service lamp is on, you must provide service for the car. After service, you need to reset the driving mileage or driving time so that the service lamp turns off and the system enables the new service cycle. 2. After changing engine oil or electric appliances that monitor oil life. You need to reset the service lamp. Packing list: 1*Host 1*Packing Box 1*Polyester bag 1*User Manual 1*USB Cable 1*OBD Cable