A SMOOTH AND CLOSE SHAVE- The 4-direction 4D floating cutter heads with double-track ultra thin cutter net and self-sharpening steel blade design, automatically adapts to the contours of your face and neck even jaw, gives you a comfortable and close shaving experience at any time USB QUICK-CHARGING- Enjoy about 120 minutes shaving time (approximately 30 full shaves) with 1 hour full charge, Micro USB power port is compatible with all standard 5V USB power adapters, convenient for your daily and travel use. A micro USB power cable is included BATTERY DISPLAY- The remaining battery charge is displayed in 5 steps so you can quickly see how much power left, reminding you of recharging when necessary, thus avoiding the unpleasant surprise of running out of power mid-shave WET AND DRY & WATERPROOF- This is an IPX7 waterproof whole body washable electric rotary shaver, allows you to use this shaver wet or dry even in the shower with gel and foam for a better shaving experience. For easy cleaning you can rinse the razor under the tap POP-UP TRIMMER- One-touch to open the Pop-up trimmer to precisely and quickly trim the sideburns, mustache, and any facial hairstyle Charging Recommendations:1. If using an adapter, ensure it has a specification of 5V 1A.2. Ensure correct insertion of the charging cable: For Type-C charging, align the charging cable with the charging port and firmly insert it. Push the cable in firmly to ensure proper connection. The charging indicator will light up when charging is complete.How to Enhance Shaving Experience:1. Wash your filthy, dirty face to get rid of those face oils and pat dry yourself off.2. Get a hot washcloth and hold it over your beard for a few mins. Especially on your mustache area as that's likely to be the thickest hair on your face. If you fold the washcloth in a triangle you can get both areas in the same go. Warm it up a few times if you're feeling it and have the time — you'll get a better shave.3. Lather up, with gel, can of decent foam, or a badger brush and old school soap.4. Go shave! Don't be afraid to apply more shaving cream to areas that need a second pass, this will help reduce irritation. Don't be tempted to dunk the shaver head in the water mid shave as you'll just fill it up with water that'll dilute the lubricating soap.5. Once you're happy with your shave, turn on the cold tap, wet that cloth, and cover your beard area with it again. This will close up your pores and soothe some of the burn or irritation the shaver might have given you.Correct Installation Steps for Shaver Blades and Foil:1. Remove the shaver head from the shaver body.2. Turn the central knob counterclockwise to the left.3. Remove the entire black retaining frame and take off the foil assembly. (Note: Do not let the blades fall off the foil.) Ensure that the foil and blade components are properly matched.4. Take out the new blade. Ensure that the blades do not fall off the foil. Make sure the foil and blade components are matched. Carefully check the foil frame; there is a notch inside. Then check the foil; there is also a notch. Align the two notches on the edge of the foil with the notch on the foil frame and place the foil in.5. Align the black retaining frame with the middle position of the shaver head. Gently press the black retaining frame to ensure it is properly installed.6. Finally, turn the central knob clockwise to the right. The foil replacement is completed.