For OneBlade models that are Bluetooth enabled, you can refer to the Daily Care app to accurately predict when to replace your blade. If you have enabled notifications on your mobile device, you will also receive a replacement notification when your blade is ready to be replaced.
Depending on your usage behavior, the exact lifetime of your blade may vary. Similar to manual blades, your blade will become blunt over time, and this may result in reduced shaving performance and an increased hair pulling sensation during shaving and trimming. For optimal performance, replace your blade once every four months.