[HIGH ]Dual blade system with lift and cut technology. Stainless steel blades for comfortably shave. Suitable for precise carding, Completely safe to touch. The pivot head can be perfectly combed on any surface.It is stronger in many fields. [EASY CLEANING]The replacement foil head is easy to install and remove. Clean the installing the foil. [COMPATIBLE WITH]The replacement heads suit for 300s, 310s, 320s, 340S, 350cc, 390CC-4 series, 3010BT, 3040s, 3050cc, 370cc, 3080s, 3090cc, etc. Very comfortable and quiet operation. Can use water wash the Blade for clean After use [SERVICE LIFE]The use time of the Foil & Cutter Replacement Head depends on your daily frequency of use. It is generally recommended that you replace it 9-12 months to your best experience. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken . Model Number: 21B Appliance Type: Electric Shavers Type: Replacement Type: Shavers Accessories Item Type: Electric Item Type: Electric Product category:Electric and hair remover color:Black Material:ABS+Metal Package Contents: 1 x Replacement Head 1 x Cleaning Brush Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.