check the pump website. There’s a plastic clip which can be attached to bikini bottoms and as Tim suggests a rather fetching black chord with pouch which can be swung round you whilst in bed (a bit unnerving at first). As long as your swimming and not just standing in the pool you can take the pump off for an hour and if necessary give 0.5 units extra to cover. I’m fantastic when I swim as I’m deaf and wear hearing aids and I can’t see without my glasses!! Batteries and water don’t mix. I usually keep my pump in the shade at the beach. I was told the pump doesn’t like the wind?