How to cut your pet's nails. 1. Press the nails. 2. Turn on the LED light to easily see the blood line, cut the transparent place. 3. After trimming, use a file to round the edge of the nail. Precautions for use. 1. This product is for pet nails only and is not used for other purposes. 2. After using the scissors, dry them with a clean towel or soft cloth. Do not rinse the scissors with water. 3. Can be disinfected with alcohol, do not touch gasoline and other chemicals before use. 4. Keep it out of the reach of children. How to replace the battery. 1. Turn the product backwards and find a place to replace the battery. 2. Open the battery cover and insert three LR44 batteries. 3.Ultra-long standby use can last up to 1 year, normal use can last up to 1 full year. Package： 1 Piece Pet Nail Clippers with Hidden Nail File