The Philips Norelco One Blade replacement mutli-color blade trims, edges, and shaves any length of hair. The unique One Blade shaving technology integrates a fast moving cutter (200x per second) with a dual protection system to give you an efficient comfortable shave on longer hairs. One Blade does not shave too close, so your skin stays comfortable. The replacement blade last up to 4 months* (*For best shaving experience. Based on 2 full shaves per week. Actual results may vary.) 1 Replacement blade. Model for reference QP210/80'