Upgraded USB charging: The pet nail grinder is rechargeable with a USB wire for your convenience. The indicator is red when charging and light turns to green once it is fully charged. The grinder can be used continuously for three hours after two hours charging.|Perfect for all pets with nails: Trimming and shaping pet nails as well as smoothing rough nails on small, medium or large dogs, cats, hamsters, guinea pigs, rabbits and birds. It is recommended to cut the nail with nail clipper first if you pet's nails are very think and difficult to clean with the nail grinder.|Applicable for all sized pets and all kinds of pet's nails: The pet nail trimmer has three ports for different sized nails. You can choose a suitable one according to the pets' size and characteristics of their nails. The larger port is for medium and large pets and the smaller one for small pets, remove the port cover, you can use the side port for fast wear armor.|Anti-slip design: Lightweight, fit to your hand, easy to hold. Super silent motor, acoustic noise in the process of operation within the 60 decibels, pets won't be afraid to grind nails any more. You can also show it to your pet before using to reduce your pet's fear for this nail grinder.|Constructed with diamond bit grinder stone: It is safer and more effective than nail clipper to trim pet nails to trim the nails of your pet, reducing the risk of clipping the claws too short or hurt pets. Easy to clean, just remove the port cover and use eraser or cloth to touch the grinder stone gently to clean the nail powder from the surface.