Features: ; Ultra-quiet and Low Vibration: Our nail clipper is equipped with an ultra-quiet but powerful motor. It gently removes thin layers of the nail with minimal noise (less than 50 dB) and vibration so that sensitive pets are not anxious or scared.; Stays Cool: The specially coated, pet-friendly grinder spins at just the right speed, preventing friction burns.; USB Charging: No need to look for batteries as it is USB rechargeable with up to 5 hours of continuous use.; No More Over-clipping: Our nail clipper slowly trims the layers of your dog's nails. No more worries about excessive clipping, uncomfortable pain, or bleeding.; Easy to Clean: To clean your trimmer, simply use a soft, damp towel and gently brush away the dust from the nails.; Specification:; Battery: built-in battery; Charging mode: USB charging; Charging time: 1.5 hours; Battery life: 7 hours