The attachments can be interchanged easily. Should only be changed when the device is turned off.
1. Pull the trimmer/razor head away from the motor unit.
2. Matching the trimmer/razor head with the motor unit.
3. Insert the trimmer/razor head into the motor unit until it clicks.
Note:We applied oil on the trimmer head to reduce the friction between trimmer/shaver head and motor unit. Please dont worry if you find it. It is safe!