1:For maximum shaving performance, it is recommended to replace your shaving head once every 12 months. 2:Made of high quality materials for durability 3:Delicate and exquisite, highly match the equipment. 4:Easy to install and remove 5:Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away. Applicable Model: S1121 S1131 S1332 S1133S1211 S1231 S1232 S1334 S1015 S1111 Colour:Black Material:plastic+metal Package Contents: 1 x Replacement Shaver Head Only the above package content, other products are not included. Note: Light reflection 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.