Citizen CC4054-68L Instruction Manual page 50

Receiving time information
Leap second reception (time required: about 36 seconds - 13 minutes)
Reception for the leap-second-setting adjustment.
• You can also execute leap second setting manually. (page 73)
48
1
Change the mode to [ TME ] or [ UTC ] and push the
crown in to position 0 .
Press and hold the lower right button Ⓐ
2
for 7 seconds or more.
• Release the button after the second hand
points " RX-TME " and turns fully around to
point " RX-TME " again. Reception starts.