Battery-powered aerator set, 2 sets, with new batteries included

Introducing a set of two ready-to-use aerators. The hose lengths and stone types differ for each.
Set includes: Waterproof covers x2, Stones x2, Hoses x2, Main units x2. Includes 3 used batteries and 1 new battery.

Ships via Yu-Packet Post. As the thickness will exceed the limit, the lid will be opened for shipping as shown in the 6th photo. Thank you for your understanding.

Includes a Kitty-chan Yellowtail sticker, the ultimate charm for yellowtail fishing, as a bonus (last photo). It's a valuable, non-sale item.

If I were buying this for myself, I'd be happy to have a new battery included to avoid the worry of the aerator running out of power mid-use.

Imagine buying bait at a fishing store, only for your aerator to break down on the way to your fishing spot! Your precious bait could die. Having multiple units provides peace of mind in such situations. The liveliness of your bait directly impacts your catch. Suitable for live bait, ayu, shrimp baiting, squid fishing, and even ornamental fish.