AiM MyChron4 660 - Manual (Page 5)

MyChron4 660
User Manual
Release 1.03
www.aim-sportline.com 4
To change battery, remove the two screws on the back of the display unit. A 9V
battery will be connected to a two-wire power lead. Simply disconnect the battery
from the lead and replace with a new battery.
Do not over-tighten the screws when mounting the battery cover to the back
of the display unit.
open here to
change the
battery