1) Charge for 100 minutes, use for 150 minutes. 2) Vivid display of operating time and battery status on the extra large LCD screen allows easy control of the operation process and avoids any possible danger. [4 Interchangeable Probes] 1. Microcrystalline Tip - For removing dead skin cells and improving skin absorption and activity, for the entire face and neck. 2. oval tip - for daily cleansing of the corners of the mouth, nose or cheeks. 3. large round tip - for the removal of dead skin cells. 3. Large Round Hole Tip - Larger round holes for deeper cleansing, suitable for larger blackheads, acne and other deeper skin layers. 4. Small Round Hole Head - The small round hole is suitable for gently removing small blackheads, grease and dirt from the surface of the skin. [3 suction modes] (L1) Residue Clearing Mode: Weak suction, suitable for clearing residue from pores. (L2) Acne Mode: Medium suction power, suitable for cleaning acne or pimples. (L3) Blackhead Mode: Strong suction, suitable for cleaning blackheads. Note: If you have thin skin, it is recommended to use L1 or L2 mode to clean blackheads.