Original Xiaomi Mijia Electric Shaver S101 with 3 Cutter Head IPX7 Waterproof(Blue)1. 3 sets of double ring knife nets. Larger shaving area than a single ring knife mesh. Get a better shave and save more time. 2. Double ring design, 18 blades shave faster, cleaner and more stable. 3. IPX7 level body precision waterproof. Equipped with detachable cutter head for easier cleaning. 4. The design of the 3 knife holders can move independently, and it is easy to remove the beards in various positions. 5. Type C universal interface,