Cleaning steps: 1. Push the blade with your thumb as shown in the picture in the instruction manual. 2. Use a brush to clean the blade, press the top of the blade holder, and clean the hair between the stationary blade and the movable blade. 3. Please drop some oil on the blade after cleaning, and then install the blade to the product, you must hear a click to confirm that the blade is installed successfully. Instructions1. After fully charged, please press the switch to use. 2. Charging method: turn off the product, insert the charger into the product, then insert the charger into the plug, turn it on and use it. Operation instructionsYou can choose different comb attachments according to your requirements, hair length can be adjusted (3.6.9.12 mm) Comb Attachment Instructions1. Cover the comb attachment on the blade2. If you want to replace or remove the attachment, pull the comb attachment from the outside Charging Instructions1. The best charging condition is 5-40 degrees. 2. The charging time is 5 hours, after 4 or 5 charges, the battery will be in the best condition. 3. Long charging time will damage the battery. 4. The product should be charged when it is out of power or placed for a long time. Charging when fully charged will affect the battery performance. 5. This product has a charging protection function, which will cut off the charging when fully charged.