100% satisfaction and money back guarantee. Please feel free to contact our customer service anytime if you feel unsatisfied or confused. CLEAR CHECK ENGINE LIGHT - Do you have a warning light illuminated on your dashboard but not want to pay hundreds to find out what is wrong? This code reader can help you accurately diagnose check engine light problem. KW903 Bluetooth 3.0 work with the app to read generic and manufacturer-specific fault codes. With our OBD II app partner, it can read over 18000 code definitions. EASY FITMENT - The majority of cars made in the past 2 decades are fitted with an OBD2 diagnostic port, simply find the port and plug the Scanner in. SMALL AND COMPACT DESIGN - Easy to install in your car OBD2 port. High reliable Bluetooth connection. AUTO SLEEP MODE super low power consumption low to 3ma. Even if you forget to pull it out a night, it will not run out of battery. VARIOUS FREE AND PAID APPS AVAILABLE! - Bluetooth3.0 works with most OBD apps. Please find download instruction in product description.Color: Red Manufacturer: Wonolo Package Quantity: 1 Part Number: 1005400Specifications OBD Interface: OBDII Frequency Range: 2402 ~ 2480MHZ Supply voltage(VDD): 12V Bluetooth version: 3.0 Transmission Range: 10M Temperature range: -20 ~ +70C Color: Black+Red KW903 scantool is a high-quality automotive scanning tool, supports all OBD-II protocols : 0.Automatic 1.SAE J1850 PWM(41.6Kbaud) 2.SAE J1850 VPW(10.4Kbaud) 3.ISO9141-2(5 baud init,10.4Kbaud) 4.ISO14230-4 KWP(5 baud init,10.4 Kbaud) 5.ISO14230-4 KWP(fast init,10.4 Kbaud) 6.ISO15765-4 CAN(11bit ID,500 Kbaud) 7.ISO15765-4 CAN(29bit ID,500 Kbaud) 8.ISO15765-4 CAN(11bit ID,250 Kbaud) 9.ISO15765-4 CAN(29bit ID,250 Kbaud) A.SAE J1939 CAN(29bit ID,250*Kbaud) B.USER1 CAN(11*bit ID,125*Kbaud) C.USER2 CAN(11*bit ID,50*kbaud) default settings (user adjustable)What is in the Package 1 x OBD2 Interface Scanner 1 x CD-ROM 1 x User ManualNote OBD-II Software for ScanEx903 Bluetooth is very user-friendly, and easy to learn. It is also very easy to install: simply extract the files into a folder on your computer's hard drive, and you're ready to go. To uninstall the program, simply delete the entire contents of the folder where the program resides.