This gadget features anti-fading technology that releases subtle fragrance pulses for up to 60 days. It also has a fragrance boost on-demand feature that activates through a touch button and lasts for 45 minutes. Additionally, the device has a low-refill indicator that turns red when the refill is close to being empty. The price drops from $8 to $3.98. Also, get $4 Walmart cash. Shipping is free or on orders of $35.