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 ToolMaterial: Electronic Component. PlasticSupply Voltage(VDD): 12VWork Temperature Range: -20 ~ +70 Degree CelsiusStorage Temperature Range: -40 ~ +125 Degree CelsiusRF Sensitivity(Basic Rate): -85dbModulation Mode: GFSKFrequency Range: 2402 ~ 2480MHZTransmission Range: 10mBluetooth Profile: SPPUART Params: 38400.8.n.1Features: Small Size. Compact Structure. Plug and Never Unplug. Stable Wireless ConnectionSize: 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 Tool1 x User ManualAbout Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions. please feel free to contact usDuring the shopping process. if you have any questions. please feel free to consult us. we will reply you within 24 hours. wish you a happy shoppingThanks for your cooperation and we'll make you feel satisfied.