Specifications: Once it stops communicating and waits for half an hour, it will automatically fall asleep. The adapter has no wires or batteries, uses the fastest and most reliable ARM chips and it is powered by the diagnosis size sockets. This car diagnostic tool can support all OBD-II. By using this, you will be able to perform a complete computer diagnosis of the car, and even correct small errors in the car without resorting to the service station. Item Name: Car Diagnostic Tool Material: Electronic Component, Plastic Supply Voltage(VDD): 12V Work Temperature Range: -20 ~ +70 Degree Celsius Storage Temperature Range: -40 ~ +125 Degree Celsius RF Sensitivity(Basic Rate): -85db Modulation Mode: GFSK Frequency Range: 2402 ~ 2480MHZ Transmission Range: 10m Bluetooth Profile: SPP UART Params: 38400,8,n,1 Features: Small Size, Compact Structure, Plug 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