This is my absolute favorite nail clipper product. I've been using it for almost 12 years now. I have 2 Italian Greyhounds and due to the breed type their nails grow faster than most other breeds so I clip their nails about every 3 weeks. I have always used this product and I swap it out every 4 years which seems like a great run to me. It's very safe. I like that it's rechargeable. The battery is always enough for me because I don't let it charge for several days. When it's charging I take it off and that keeps the battery strong. I love this product very much.