5 Dual track Shaver Heads: Achieve a smooth head shave in under 90 seconds with precision. 66% more cutting heads: Enjoy a close, comfortable shave like never before. Full floating heads: Adapt to your head's contours for a seamless, customized grooming experience. Japanese grade steel blades with titanium coating: Long-lasting sharpness for enduring performance. This replacement head is compatible with both Balder Boss Head Shaver model #XR7120USD and Balder Head Shaver model #XR7100CDN. Not compatible with Balder Pro XR7000CDN