1.Suitable for 3 series 30B :310,330, 340, 199, 197s-1, 195s-1,199s-1, 4735,4736,4737,4745,4775,4835,4845,4875,4876, 5713,5714,5491,5492,5493,5494,5743,5745,5742, 7475,7493,7497,7504,7505,7510,7511,7514,7515,7516,7520,7526,7540,7546,7564,7570,7630,7640, 7650,7664,7680,7690,7763,7765,7783,7785,7790, 2,High-Quality Materials: It is made of high-quality materials to achieve continuous, efficient and easy-to-use characteristics. 3,The Best Shaving Effect: In order to get the best shaving effect continuously, we recommend that you change the shaving every 18 months. Within 18 months, your electric shaver can trim more than 6 million hairs, thereby gradually reducing pruning performance. 4,Special Processing Technology: The replacement adopts a special processing technology to which more the texture of your shaver. 5,Restore Performance: Changing the can restore your shaver's performance and get a better shave effect. By changing the regularly, the shaver maintain its best condition for many years. Color: as shown Material: PlasticandMetal Package Contents: 2 x shaving accessories 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store