Specifications: Once it stops communicating and waits for half an hour, it automatically goes to sleep. The adapter requires no cables or batteries, uses the fastest and most reliable ARM chips, and is powered by diagnostic-sized sockets. This car diagnostic tool supports all OBD-II diagnostics, allowing you to perform a full computer diagnosis of your car and even correct minor errors without having to visit a service station. Item Name: Car Diagnostic Tool Material: Electronic Component, Plastic Supply Voltage (VDD): 12V Working Temperature Range: -20 ~ +70 degrees Celsius Storage Temperature Range: -40 ~ +125 degrees Celsius RF Sensitivity (Fundamental Rate): -85dB Modulation Mode: GFSK Frequency Range: 2402 ~ 2480MHz Transmission Range: 10m Bluetooth Profile: SPPUART Parameters: 38400.8,n.1 Features: Small size, compact structure, plug in and never unplug, stable wireless connection Size: 5cm x 2.3cm x 2cm / 1.97" x 0.91" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Car diagnostic tool 1 x User Manual About Shipping: All items will be shipped within 3 business days after payment is received. In most cases, you will receive them within 8-12 days. The exact delivery time depends on the circumstances. If you have any questions, please feel free to contact us. During the shopping process, if you have any questions, please contact us, we will reply you within 24 hours. Wish you a happy shopping. Thank you for your cooperation and we will make you satisfied.