A. Fragrance system ointment resetting device B. No need to connect a computer and phone, plug it in to reset. No need to connect to a computer C. Suitable for BMW 5 series 6 series 7 series X3 X5 X6 X7 D. Do you notice a strong fragrance after using the ointment E. Do you think it's useless to keep it, but it's a pity to throw it away, so you need a ointment reset device, resettable car balm F. No need to connect to phone G. No need to download the app H. No need to download software I. Plug in to reset J. Easy installation switch button K. Plug in and power on, press and hold the switch button for more than 2 seconds L. I saw the green light coming on and it was reset M. Intelligent fragrance reset device N. Material: ABS O. colour: black P. Package Contents: 1 x Intelligent fragrance reset device 1 x USB cable Only the above package content, other products are not included. Q. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.