1. Viecar 4.0 is the world's smallest multi-function integrated automotive electronic product with many chips. 2. Viecar 4.0 adopts Bluetooth 4.0 dual module design and supports IOS and Android devices. 3. Viecar 4.0 has fast data transmission speed, low power consumption and power saving. 4. Viecar 4.0 including fuel consumption analysis and evaluation can save us fuel and money. 5. Viecar 4.0 will also record driving behavior, analyze vehicle information, and propose improvements to help us correct bad driving habits. 6. Through the connection of the car ECU and the computer, the 360-degree vehicle detection can be realized, and the fault code can be found earlier to help us deal with it in time. Viecar 4.0 specifications: Communication method: Bluetooth Dual (2.0/4.0) Software platform: Android/IOSPower supply: 9V-16VCurrent: 45mATemperature: -40~85Humidity: below 60%Size: 45mm*40mm*18mmModel: For OBDII cars Supported OBD-II protocol: SAE J1850 PWM (41.6 Kbaud) SAE J1850 VPW (10.4 Kbaud) ISO 9141-2 (5 baud initialization, 10.4 Kbaud) ISO14230-4 KWP (5 baud initialization, 10.4 Kbaud) ISO14230-4 KWP (fast initialization, 10.4 Kbaud) ISO15765-4 CAN (11-bit ID, 500 Kbaud) ISO15765-4 CAN (29-bit ID, 500 Kbaud) ISO15765-4 CAN (11-bit ID, 250 Kbaud) ISO15765-4 CAN (29-bit ID, 250 Kbaud)