Upgraded version razors for men with stronger-than-steel blades stay longer . Lubrication strip glides to help protect your skin from redness Advanced skin guard helps stretch your skin, and prepares your hair to be harmed. new quality Easy to replace every 3-6 months Item Name: Blade Head Fit:S7000 S7310 S7370 S7530 S7780 Colour:Blue Material:metal Package Contents: 2 x cutter head adapte Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.