[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 and neck. Our 4D Floating Head is more comfortable and provides a closer shave than standard 3-head designs. [Compatibility] Compatible with Gold Pro, Silver Pro, Diamond Pro, and Butterfly Kiss 4 Head Razors. [Quick Replacement] 1-second click design for easy replacement. IPX7 waterproof construction allows rinse under running water. Note: The base is not included. Color: As shown Material: Metal Package Contents: 2 x Professional Replacement Heads 2 x Cleaning brushes Only the items listed are included; other products are not included. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.