Extend the D1 D2 D3 Q5 Model device (not included) with this 560-hour refill. It's easy to install and replace.
This refill is heated by a D1 D2 D3 Q5 Model device (not included). Within 15 minutes, it is create a 20ft effective zone will form around you.
Simply screw the refill bottle into the device and keep the core rod centered. When the refill in the bottle is used up, remove and replace it with a new one.
There are 2 bottle 280-hour refills in packaging. It compatible with the D1 D2 D3 Q5 Model device which use the repellent refill. Each refill lasts up to 280 hours. The capacity of each bottle of refill is 45ml (1.52fl-oz). Assuming you use it for 8 hours a day, one bottle of refill can be used continuously for 35 days.