3 PORTS SIZE + 2 ROTATING SPEEDS: Upgraded pet nail trimmer with super power motor for large pets or thick nail, it would be more safe and effective. The dog nail clippers equipped with 3 ports size which are widely applied to small, Medium, Large pets with different size nails. There are 2 speed switch: Normal speed for trimming accurately, and higher speed for grinding quickly. Pet Nail Grinder with Diamond Bit: The dog nail grinder is improved with diamond bit which is safer and more effective to trims nails comfortably. The dog nail grinders enable to reduce the risk of over cutting and hurting your pet. Tips: Please properly cut dog's nails firstly if the nails are too long to reduce long grinding time. Low Noise and Vibration: The electric dog nail clipper adpots unique technology with low noise less than 55 dB and low vibrations, gently remove thin layers of nail with a soft sound to create a more comfortable environment for your pet, freeing your ears. With 7000-8000 RMP, it rotates 7000-8000 circles every 1 minute so that you can finish grinding quickly and pets can get freedom faster. USB Rechargeable Design: The pet nail file adopted advanced 600mA lithium battery which supports quick charging and long working time. The rechargeable pet grooming for dogs features with cordless design. It is convenient to charge with computers, power banks, car chargers when battery runs out. Super suitable for pet grooming store or using at home.