Ergonomic Design: The dog nail clipper creates smoother and rounder nail tips. Lightweight and ergonomic, saving effort. Safe and Reliable: The dog nail grinders are safer and reduce the risk of cutting the nails too short or hurting your pet. BUILT TO LAST: The dog nail grinder is USB rechargeable and comes with an indicator light for easy use; 2 hours of charging time and up to 3 hours of use. QUIET OPERATION: The dog nail grinder features a superior motor and quiet technology that operates at less than 50 decibels and will not scare your pet. Widely Used: The pet nail clippers are ideal for pet grooming shops or home use, horse grooming supplies. (Contains 2 built-in batteries)