[High-Efficiency Shaving] Precision-engineered 0.03mm blades with 8-directional flex capture 99.7% of 0.1mm stubble. Over 12 months the Pro 4 replacement head cut over 5,500,000 hairs. [Zero- Skin Contact System] 4 ultra-thin titanium foils adapt to jaw/neck . Our 4D Floating Head is more comfortable and closer than standard 3-head designs. [Compatible with] Compatible with for Gold Pro, for Silver Pro, for Diamond Pro, for Butterfly Kiss 4 Head Razors. [1s Click Replacement] design is easy to replace. IPX7 waterproof construction allows tap rinsing. Note:The base is not included. Color:As Shown Material:Metal Package Contents: 2 * Professional Replacement Head 2 * brush 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.