Step 1: Twist the head counter clockwise and it just pops off.
Step 2: Put replacement on, find the corresponding position, and twist clockwise, then push down.
MAKE SURE TO INSERT AND ALIGN TRIANGULAR SHAFT WITH THE TRIANGULAR DRIVE ON THE HEAD BEFORE TWIST-LOCKING THE HEAD. IF IT IS NOT PROPERLY INSERTED, THE DEVICE WILL NOT SHAVE, OR IT MIGHT JAM.
1ste Generation Single Hollo Design
3D floating net upgraded design making shaving smoother and more comfortable.
Easy to Clean
You can also use the supplied brush to clean the head, or simply rinse it under the water.