The Cat GPS Tracker is a wonderful product with marvellous support. It allows us the know where our precious cat is at all times. Our very small cat has no problem with wearing it and even seems to enjoy wearing the collar and tracker. The use of the audio tone allows us to locate her in the house when she has hidden herself in some obscure location i.e. airing cupboard, etc. The rechargeable battery life is good. We use two trackers which we change over each evening to make sure her tracker is always online. We charge the tracker with a USB power pack which turns off the charging once the tracker battery is fully charged, which prevents the risk of reducing the life of the battery in the tracker. A very useful and reasonably priced product.