Function: with odor neutralization technology to prevent bad odors inside the vacuum cleaner. Yellow, zesty lemon flavor. Easy to install: No other tools required, align the arrows on with the arrows on the nozzle, insert the odor neutralizer and turn the intensity dial to the desired setting. Recommended replacement: It is recommended to replace it every 4-6 months for optimal results. Application: Tailored for families with pets, smokers, or those passionate about keeping their homes fresh and clean at all times. Compatible with AZ3000 AZ3002 HZ3000 HZ3002 IZ862H IZ562H ZD550 Vacuum Cleaners. Note: the physical difference in color or difference does not affect use, please do not mind, thank you! Color: C: Lavender Aromatherapy Material: plastic Package contents: 4 x Odor Eliminator Replacement Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.