The body is 56.5mm in diameter slimmer than a thermos. Four 2000mAh high-performance power batteries offer 45 minutes of battery life.Long press the power button for 3 seconds to turn on the light to clearly illuminate the dark corners and gaps in the car for a thorough clean.Built-in air flow sensing unit that automatically increases the suction force when it touches debris and other stubborn garbage for an easier and smart clean.The combination of fine steel filter and HEPA filter is highly efficient in stopping dust with a removal efficiency of over 99.7% for particles below 0.3 microns in diameter.A large capacity dust bin with a cyclonic separator is easy to assemble and disassemble. 70ml large capacity lets you vacuum at one go.The metal body via CNC anodizing process improves the texture of car vacuum cleaner to match the car interior better. Instructions For Use 1. Fully charged before first use 2. Press the power button to start level 1 and press again to open level 2 3. Triple press to turn off the clearner 4. Long press the power button for 3 seconds to turn on the light and long press again to turn it off 5. Rotate the dust cup to take out the dust box 6. Clean and complete convenient to receice.