This clever little device is a miracle of Chinese engineering.
It is a battery operated fan/cooling spray. You fill the bottom half with cold water, pop an AA battery into a slot in the back, and pull trigger. A fine cooling spray of water can then be directed at whatever part of the body (or dog, or pony) that requires cooling.
I like the way the Chinese always mark their products as being made in the PRC, which I always thought referred to some type of Pony Racing Club.
It does work, and I would recommend it to people with small children/babies on the beach. It works on me too. With our afternoon temperatures around 38 C, we need these things. They should be supplied by the state; I'll have a word with Macron.
After an afternoon swim just now, I was visited by about 50 Swallows all swooping down over the pool for a drink; what an amazing sight. I think all this extreme heat may be coming to an end; we had one clap of thunder, three flashes of lightning, and seven drops of rain last night. It's all been a bit too much!