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To load new batteries in the chest belt (RS109 and RP109
only) and bike mount:
The chest belt will stop sending signals if its battery is
low. Bad transmission from the chest belt may also be the result
of poor contact with the skin, surrounding interference, or
placing the receiver watch too far away.
To load new batteries in the bicycle sensors (RP109 0nly):
The sensors will stop sending signals to the watch if
their batteries are low.
Replace the batteries whenever the HIGLO backlight
dims or stops working, or when you see the low battery icon.
NOTE
GETTING STARTED
TURN ON THE WATCH (FIRST-TIME USE ONLY)
Press mode key for 2 seconds or more to activate the LCD
Display
BATTERIES
All batteries are included and already installed. Refer to the
Specifications page for battery types (➔ 27).
To avoid the possibility of permanently damaging the
watch, we strongly recommend that you take your watch to a
local retailer or jeweler to have the watch battery replaced.
To load new batteries in the watch:
Diagram Instructions
1. Remove the watchband and screw pin.
2. Remove the back cover with a small Phillips screw-
driver.
3. Install the battery by matching the correct polarity.
Always use the correct battery type.
Warning: Reversing the polarity may damage the
product.
4. Replace the cover, screws, screw pin, and
watchband. (Be sure to replace the O ring prop-
erly).
5. Check the replacement batteries are fitted properly
by confirming there is a key tone (beep).
C
R
2
0
3
2
Diagram Instructions
1. Insert a coin into the grove. Turn counter-clock-
wise.
2. Insert the battery. Match the correct polarity.
3. Replace the battery compartment. Tighten into
place.
Diagram Instructions
1. Insert a coin into the grove. Turn counter-clock-
wise.
2. Remove the battery and insert a new one.
3. Replace the compartment. Tighten into place.
NOTE
NOTE
NOTE